What is DyAc?

DyAc (Dynamic Accuracy) is a proprietary BenQ Zowie technology which is used on their (higher end) gaming monitors, designed to reduce eye tracking motion blur (see: Blur Reduction Technology) during gameplay. It is the successor to the company’s Blur Reduction, featuring improved performance and clarity.

Being able to clearly see what’s going in a fast moving game is of vital importance, so most monitor manufacturers now offer their own proprietary version of blur reduction, usually done via a technique which is called ‘backlight strobing.’ BenQ Zowie’s DyAc utilizes a custom algorithm to strobe the backlight to prevent fast moving scenes from blurring, thus potentially improving your own ingame performance.


Modern (gaming) displays use LCD (Liquid Crystal Display) technology where, simply put, a light beam passes through thousands of liquid crystals to produce the image on the screen. If you look at a modern display close up you can even see the individual pixels that make up the image. This technology brings a number of advantages with it over the CRT (Cathode Ray Tube) displays of old; displays are now way thinner, they produce less heat, and the image that LCD displays can produce is much, much sharper than what typical CRT displays can put out.

Unfortunately there are also disadvantages: these crystals take a while to ‘close’, which means that the previous image that they were displaying can still be visible for a fraction of a second. This isn’t a huge deal for stationary images, but this can cause motion blur (or ‘ghosting’) on fast-moving objects in the game.

A way to combat this blur is by shortening the amount of time each frame is on screen. That’s done by (for example) producing higher refesh rate monitors, but also by what we call ‘backlight strobing’, i.e. turning the backlight off in between frame refreshes, thus shortening the amount of time that a frame is displayed even more.

DyAc is BenQ Zowie’s backlight strobing technology, which has been specifically designed for (FPS) gaming.

How can DyAc and DyAc+ help in games

DyAc is BenQ Zowie’s proprietary algorithm for backlight strobing. It’s specifically designed for reducing the blur on very fast and erratically moving objects, such as, for example, when your screen is shaking due to firing a gun with heavy recoil, or when you’re making quick swipes across the screen. This technology, along with the higher refresh rate of their DyAc enabled gaming monitors, results in a much smoother image when compared to traditional non-gaming focused displays.

DyAc’s flickering is (like most proprietary forms of motion blur reduction nowadays) invisible to the naked eye when it’s on, so it causes no issues with gameplay such as a double image effect. DyAc can be (contrary to popular belief) fully turned off as well, so people who would rather not use it can opt to do so.

DyAc was also (according to BenQ Zowie’s limited information on the subject) developed with controlling ‘shocky’ recoil, such as that from the AK-47 in CSGO in mind, though its use obviously isn’t limited to CSGO only. Since the screen refreshes the image much more fluidly when DyAc is active it becomes way easier to track and control your crosshairs when you’re spraying.

DyAc monitors use a customized LCD panel with changes made to the circuitry and firmware settings to achieve greater clarity in (FPS) games. We’ve reviewed some of BenQ’s monitors which feature DyAc (the BenQ Zowie XL2546 and XL25646K) so if you want to check out those reviews you can.

With the release of the K models, Zowie has also released a new version of DyAc, called DyAc+. That’s an improved version that uses the exact same principles as DyAc to reduce screen shake and aids in controlling recoil.

Update: Zowie has recently released their own article on how DyAc works and can help you perform better, so click here if you want to check that one out!

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I have 2456 and without DyAc it feels faster, I like DyAc but strictly rendering/input delay does keeping DyAc off reduce those. I heard it does but I can’t find exact figures.


me too


Hi! Does pro players use dyac and ama on premium for both ?

ProSettings | Lars

It depends on their personal preferences. We have an ever-growing list of pro players’ BenQ settings here though so feel free to take a look at that!

Maycol Hernandez

for warzone Dyac Premiun and Ama High is good ?

ProSettings | Lars

Yup, that should be good!


Hi, I have a 2411k xl monitor. There is no insta mode option. This is in the P series. I use dyac premium and AMA premium. Can I get the lowest latency with these settings ?

Greetings from Turkey

ProSettings | Lars

You can use either AMA high or premium: premium can sometimes cause inverse ghosting so if you notice that we’d recommend leaving it on high. DyAc on premium should be fine: these settings should give you the fastest response times overall.

Allan Castillo

I am currently on ps4 and bought a xl2411k and i play fortnite but don’t know what would be the best dyac mode for me since i’m only on 60 hz right now,If i put it on premium would it be bad or should I keep it on high or just turn it off? Will i have to worry about something like overshoot if i play with dyac on the premium mode on a ps4 like fortnite games? Helpp pleaseee

ProSettings | Lars

We’re not that experienced with console gaming, however if there’s no apparent flickering or overshooting then there should be no harm in using Premium.


If I can’t run fps to 144.
I Should use XL2411K for Dyac? Or Dyac and Framerate is Unrelated.

ProSettings | Lars

You can use DyAc at any point, it doesn’t really have anything to do with your actual framerate.


Hello, Do i need to cap my fps to 240 for Dyac to properly work or can i run my fps uncapped without it having any issues? I can’t seem to find anywhere that answers this question :/

ProSettings | Max

You can run it uncapped, that’s no issue.


Hi I love this website please tell me, do we have to fire overdrive function in zowies monitor? The new XL2746s I purchased from amazon waiting to see the review in your site, do you think its a good monitor for multiplayer fps gaming?

ProSettings | Max

Hey, thanks for the kind words! The XL series is really good for FPS gaming. It’s in fact designed for just that so you’ll no doubt be very pleased. We don’t really know what you mean with your first question though, perhaps you could elaborate?


Do many professionals use dyac?

ProSettings | Max

We don’t have exact numbers on that, unfortunately. A lot of pros do switch it on but we can’t say exactly how many since we don’t have that data for all professionals.

Justin Nguyen

I am interested in getting a 240hz monitor. I found one for around $270. I am going to be mostly playing csgo. Is it worth the extra $200 to go for DyAc or no?

ProSettings | Max

If you can find a proper non-DyAc 240Hz monitor for 200 dollars less than a DyAc model we’d recommend the non-DyAc since those are pretty wild savings.


Can you explain for me what is different between … DyAc off , DyAc high and DyAc premium?
and what is the best for Fortnite Pro Players.

ProSettings | Max

DyAc off turns the tech off, while high and premium basically control how much the tech is working to change what you see on the screen. We’d recommend starting off with premium and then switching to high to see what you like most (this is mostly personal preference, though the actual differences are very small).


Q1) Does Dyac premium cause atleast minor to minor input lag in games comapared to dyac off.Atleast veryminor input lag using Dyac??
Q2)What is exact release date of XL2411K and its price in USD?

ProSettings | Max

We don’t notice any input lag with DyAc on. That’s not to say that there theoretically isn’t any but it’s not noticeable in ingame scenarios.
We don’t have any info on the release date of that one or the price. Perhaps it’s best to contact Zowie directly for that information!


Hi, if i play a game like ark and my fps jumps around from 120-140 to 200 will it be much screen tearing? considering that xl2546 does not support G-sync

ProSettings | Max

There could be tearing yes. What you can do is cap your FPS to a certain number so that there’s less fluctuations between framerates or get a monitor that has G-Sync capabilities. We play a lot of games with variable framerates though and unless it’s constantly dipping from 120 to 200 there usually isn’t a massive issue but of course this depends on your tolerance for this kind of stuff.


How can you be certain that DyAc+ does not increase input lag?

ProSettings | Max

There’s been extensive research by independent websites and organisations that determines that there isn’t any perceivable input lag.


whats better for competitive game dyac premium or high

ProSettings | Max

It depends from game to game and your personal preferences but we usually have it on premium for pretty much all games.


What is the difference between DyAc+ and DyAc (non+)

ProSettings | Max

DyAc+ is an upgraded version of DyAc but Zowie hasn’t really released any detailed comparisons or technical documentation yet so we can’t really say for sure.


Hey if i wont use the dyac is there any reason not to go with the xl2540?

ProSettings | Max

If you’re sure you’re not going to be using it the XL2540 is indeed a perfect alternative. There are no downgrades anywhere on that model so you should be good to go.

Blur Busters

It’s also worth noting DyAc is brighter than their non-DyAc technology. BenQ ZOWIE intentionally increased the brightness of DyAc to practically match the non-strobed brightness.

ProSettings | Max

Thank you for sharing your thoughts!


Hey could you name or is it listed which pro players use DyAc? Also I have an Alienware 240hz, is Zowie better? For FPS? Or not really

ProSettings | Max

Well, the vast majority of pros are on 240Hz so if you’ve got the budget we’d recommend that. Granted, the difference between 144Hz and 240Hz is less perceivable than the difference between 60hz and 144hz but there definitely is a difference.



I used to play cs back in the BETA days before even 1.6 but decided to give up and concentrate on life. However as a side effect of that I now have a son, he plays csgo and is actually pretty good , lvl10 on faceit. I am however looking to improve his monitor being the competitive dad I am. He has a 144hz Zowie BenQ at the moment. I am looking for a monitor purely for csgo. which in your opinion would be better in these 2 : BenQ zowie XL2746S or the MSI251RX which is a new ips panel as you will know. If its of importance his GFX card is a RTX2070


ProSettings | Max

We haven’t tested the XL2746S ourselves, but our reviewer still uses the XL2546 as his main monitor and Zowie monitors are the monitor of choice for most pros and tournament organisers so we’d definitely argue that the XL is worth considering. The MSI might look a bit better thanks to the IPS panel, but that’s a monitor we don’t have hands on experience with so we can’t make any definite claims on that.


Which technology would be the best for consistent 240 Hz @ 240 FPS gaming (DyAc, G-Sync etc…) and which are the cons for each (input lag, motion blur, crosstalk etc…)?

ProSettings | Max

It depends, honestly. Some people prefer having DyAc on while some leave it off, some prefer G-Sync, … It’s difficult to say for that reason, but we do talk about blur reduction technologies in various other library articles (60Hz vs 144Hz vs 240Hz and G-Sync vs FreeSync) so feel free to check those out if you haven’t.


Dyac on HIGH or Premium ?

ProSettings | Max

Depends, to be honest. It’s probably best to mess around with it a bit for yourself since it varies from game to game and person to person. I have it set to premium for all games I play though.

Roger Skullestad

Will there be any penalty running 240hz Dyac if the game is demanding and frames drop well below 240hz? no double images or so?

ProSettings | Max

We don’t notice any odd behavior when running DyAc with very demanding games so it should be fine.


Is the benq xl2546, the same as 2540, but just has dyac, or even without dyac the 2546 is better than 2540

ProSettings | Max

It’s pretty much the same in every meaningful way yes.

Anton Bazhenov

Does it worth it to pay more for DyAc if I want maximum smoothness? But also the price really matter for me. 😀
Adil Scream advertised on his youtube channel the brand new gaming minitor AORUS KD25F. He say the monitor is really very smooth. But I saw he still uses his old monitor Zowie Banq XL2546 with DyAc on his Twitch stream.
AORUS KD25F doesn’t have DyAc but has 0,5 millisecond respond time. Smoothness really matter for me not only because fro competetive csgo gaming but I wish to have maximum comfort and expirience for smoothenss. That’s why I ask if I pay more for DyAc or 0,5ms, will I regret it or not? I would appreciate for the full answer, thank you very much!

ProSettings | Max

Whether it’s worth it or not depends on your personal preferences, to be honest. Some people swear by DyAc while others don’t think it does all that much. We don’t really have any extra info on that AORUS monitor so it’s kind of hard for us to say what you should pick, but the XL2546 is the standard monitor in the CS:GO pro scene for a reason so you cannot go wrong with that one if you’re asking us.


i have a 240hz dyac monitor but with dyac on or off i dont see any difference. Why is that?

ProSettings | Max

The difference isn’t hugely noticeable to the naked eye in most situations, it’s more of a ‘feeling’ kind of thing. If you’re gaming at over 240 frames per second the game already feels plenty smooth so it’s a bit more difficult to see any real changes. That said; could just be that you’re not as sensitive to the stuff that DyAc is trying to help with; we can’t really say why you’re not seeing a difference with any certainty.


I’m planning to buy this monitor to use with 2070super and R5 3600, say if i get lower frames than 240, then am i better off buying a 165hz gsync monitor or this?
Game to be played Apex Legends

ProSettings | Max

If you don’t get the required frames you can in theory get away with a 165Hz monitor, but if you’ve got the budget it’s always best to go for a 240Hz monitor if you’re asking us, if you’re gonna be using it mainly for competitive gaming. That way you can use the extra frames if you play less demanding games or you upgrade your rig.


I have the dyac version of the xl2546. Should I enable gsync through control pannel or leave it at fixed refresh rate and will I benefit from it. I play games like R6, division 2 and battlefield titles

ProSettings | Max

The XL2546 doesn’t normally feature G-Sync. In any case, we usually don’t fix the refresh rate in any game, once you get to a certain amount of fps there really aren’t that many issues with tearing.


Dyac vs Gsync pros and cons?

ProSettings | Max

Well they both serve different purposes to be honest with you. DyAc is more of a blur reduction technology while G-Sync also serves to eliminate tearing and what not. We’ve got library articles on both, so feel free to read those for a more in-depth explanation! If you can go into more detail about why you’re considering the two (i.e. what kind of framerates you’d like to game at, what games, …) I’d be glad to help you out further though!


Does it worth if I buy a 240hz without Dyac for Csgo?

ProSettings | Max

Yes, it’s worth it, assuming your PC can push enough frames.


Does dyac work on ps4 ,i know not worith it but let me know
Plz ?thkns

ProSettings | Max

Yes, it should work.



is there any difference between gsync and dyac? What is better for Pros at CSGO?

ProSettings | Max

Hi! We also have a library article on G-Sync, you can read it here: https://prosettings.net/library/what-is-gsync/

They’re quite different actually. If you’ve got a good PC and a high refresh rate monitor (which you’ll have if you have a monitor with DyAc) there’s no real need to use G-Sync, because you can easily get enough frames in CS:GO to the point where frame there won’t be any frame tearing.

Most CS:GO pros are playing on monitors that don’t even support G-Sync, so the answer to your question is DyAc.


Is there input lag when dyac is on?

ProSettings | Max

No, DyAc does not cause input lag.


Hi. I am just curious. What is the difference between DyAc and ULMB?
Thank you.

ProSettings | Max

Check out our ULMB article to see the differences between ULMB & DyAc: https://prosettings.net/library/what-is-ulmb/


Can u use dyac on PS4 pro at 60hz?

ProSettings | Max

In general it’s not worth it to buy a monitor like this for console gaming. They can only reach a maximum of 60 frames per second, so getting a monitor that can display 240 is overkill. I would strongly consider the RL2455 from BenQ. It has a super low response time and is actually tailor made for console gaming!



Does all Pros use DYAC? or not? thanks for help

ProSettings | Max

No, not all pros use DyAc. Some of the pros that we have talked to prefer to have it on and some like to have it off. 🙂


Hi there, I would liketo know if DyAc on Zowie XL2546 (240Hz)will still work if the FPS is over 240? Or I need to cap my fps at 240 in order to make DyAc on?

ProSettings | Max

DyAc should still work above 240 frames per second.