What is DyAc?

ProSettings | MaxLibrary74 Comments

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.

DyAc in action


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.

Eye Tracking Motion BlurEye Tracking Motion BlurEye Tracking Motion Blur

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.

If you look at the images on the right you can see that, even with both monitors outputting 144 frames per second, the enemy Zarya (circled in red) can be seen much more clearly on a monitor with DyAc enabled as opposed to on the monitor without DyAc. In fast moving games this can undoubtedly give you an advantage when it comes to tracking the onscreen action and responding appropriately.

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 already reviewed one of BenQ’s monitors which features DyAc (the BenQ Zowie XL2546) so if you want to check that out you can click here.

Recently Zowie has released a new monitor which has the so called DyAc+ technology. 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!

144Hz monitor without DyAc144Hz monitor with DyAc
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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 :/


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?


Do many professionals use dyac?

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?


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.


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?


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


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


whats better for competitive game dyac premium or high


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


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

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.


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



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



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…)?


Dyac on HIGH or Premium ?

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?


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

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!


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


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


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


Dyac vs Gsync pros and cons?


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


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



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


Is there input lag when dyac is on?


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


Can u use dyac on PS4 pro at 60hz?



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


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?