XL2411Z V2, my findings so far [settings, VT1500 trick, etc]

[hex]

before using this tweak even a strobe duty of 030 is noticeably darker compared to having blur reduction off. however after it is slightly brighter! i still cant believe it. is this normal? i knew the tweak was supposed to make the image brighter but i didnt think the change would be so significant. why does this happen and why doesnt the monitor ship from the factory with these settings?

currently i have 1920x1080 VT1502 @120Hz working great as well as a few other random resolutions / refresh rates. however some of them wont produce this super brightness. is there some math behind this i can follow to achieve the improved brightness at any custom resolution / refresh rate? at the moment it seems fairly random if it works or not.

also one other thing that seems pretty random is the way scaling works on the display. when messing around with custom 1600x900 refresh / vt tweaks sometimes the image is stretched to fill the entire display. however other times it is centered. example: 1600x900 @124Hz is centered while 1600x900 @123Hz is full screen (stretched). this seems completely random. does anyone know why this happens?

[PanzerIV]

I've done several tests with my (X-Rite Colormunki Display) on this monitor and here's what I've been able to notice.

1- Setting the Vertical Total at 1502 result in an increase of brightness of 30cd/m2!

2- On my XL2420Z I get 121-123cd/m2 with the brightness set to 13. If I activate Blur Reduction I fall down to 70cd/m2 so that's a loss of 53cd/m2!

3- Setting back the brightness to 100% while keeping Blur Reductione nabled, it does back to 134cd/m2! At least that's with Crosstalk 0 and 1.5ms

[hex]

also one other thing that seems pretty random is the way scaling works on the display. when messing around with custom 1600x900 refresh / vt tweaks sometimes the image is stretched to fill the entire display. however other times it is centered. example: 1600x900 @124Hz is centered while 1600x900 @123Hz is full screen (stretched). this seems completely random. does anyone know why this happens?

well i seem to have figured this out. just a noob mistake. some of the resolutions were using 1920 x 1080 active pixels and others matched the actual resolution. good to know you can customize this to get centered or stretched though. is there a "best" way to do stretching (upscaling?) / centering? apparently you can do it via the gpu too? i remember reading something about in not being ideal and that it possibly increased input lag or had some other downside.

[masterotaku]

is there a "best" way to do stretching (upscaling?) / centering? apparently you can do it via the gpu too? i remember reading something about in not being ideal and that it possibly increased input lag or had some other downside.

In my experience with this monitor, if you want to maintain aspect ratio, GPU scaling is more reliable. In theory, it adds some input lag (because monitor scaling in this case adds essentially 0 input lag, they say).

I edited my first post (see "edit nº 3"). Some timings make the monitor switch to Lightboost. I'll be testing it now.

[rcarlos243]

I tested this trick on my XL2420Z v2 and I could go as far as VT1502 Vertical Total @ 129Hz

I tested 130Hz with VT1350 and VT 1502 but i get an out of range signal.

I also noticed that my screen is brighter on 129Hz @ VT1502 than 120Hz @VT1502 which allows me to use 0.5ms Persistence with acceptable brightness level for me.

is there any other timings that we could tweak to further improve the performance of this monitor (like Horizontal Total or the other numbers at CRU)?

[rcarlos243]

Edit nº 3: removed the strobe phase setting. Adjust it as you want (for example 000 or just before it reduces brightness). Changed some VT pixels because at some refresh rates, 1502VT caused some "waves" going up or down in the image. Added 121Hz. It seems like some VT makes the monitor switch to Lightboost automatically. It's around 1150 and 1160 VT, for example.

can you explain what that means?

[masterotaku]

I tested 130Hz with VT1350 and VT 1502 but i get an out of range signal.

Yeah, I got it working some time ago, but it gave me the "out of range" error randomly, so I deleted that custom resolution.

is there any other timings that we could tweak to further improve the performance of this monitor (like Horizontal Total or the other numbers at CRU)?

Tweaking the horizontal total allowed me to reach 1360VT at 60Hz (see the first post), but I don't know if it affects image quality or not.

can you explain what that means?

Horizontal (screen width) and transparent wave lines going up or down the screen, always moving at the same speed and separated around 5 pixels from each other. It was like water waves. Sometimes it was pretty noticeable. If you don't get that effect, good for you .

[error-id10t]

First time posted, short term lurker. Great forum by the way.

Now to my question.. at the moment I mainly play 2 games.

BF4 is set to 100Hz @ VT1502, FPS limited to 99. I find this a good value as getting 120FPS from a 780TI Classy is hard with everything turned up. So no issues here.

Watch_Dogs is using the above also at the moment. But I tried to create a 60Hz profile as there's no point trying to get huge frames, it's not a twitcher and the bonus would be I'm always @ 60FPS, but the flickering is completely out of control, can't watch the screen at all.

I tried the settings from the 1st post, it made it slightly better but still completely unusable. So when using 60Hz mode, do I have to turn off Blur Reduction etc?

add: XL2411Z v2.

[PanzerIV]

BF4 is set to 100Hz @ VT1502, FPS limited to 99. I find this a good value as getting 120FPS from a 780TI Classy is hard with everything turned up. So no issues here.

That's nice, I use exactly the same settings for BF4 as I've tryed 120Hz before and it's impossible to never drop below that frame rate even with a crossfire of R9 280x 3Gb in 1080P. Anyway there's barrely any difference between 100-120 and a steady 100 will be way better than an unstable 120!

As for Watchdogs, I'm not sure if I've read that the XL2420Z could use the Blur Reduction down to 75Hz but not underneath. You may want to try that instead of 60Hz, anyway at 60Hz it will be very hard on your eyes like those old CRT monitors back in the days that would make ur eyes bleed at 60Hz. I could only handle those when I was at least at 85Hz. You've got a 780Ti so...

[error-id10t]

Yeap, 60Hz is painful, seizure inducing. The "problem" is there is no in-between from 100Hz to 60Hz, so I guess 100Hz will do. I was just trying to optimise, it's not like the 100Hz setting causes problems in the game itself.