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[Official] BenQ XL2730Z Owner's Club - Page 5

post #41 of 837
Wow, this monitor has a lot of teething issues it seems. I bought it as a refurb for $288 shipped on Ebay. It has a March manufacture date but with V002 firmware. Everything works fine but I get some weird dimming on certain situations with Freesync enabled. I ran Valley bench with freesync and it looks like the monitor is flickering and also Advanced Warfare does it as well. Is there just applications and games that are just not compatible with Freesync?
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post #42 of 837
Flickering?
Make sure that blur reduction is not enabled if you're using freesync.
Someone said that (and I don't remember if It was in the other XL2730Z thread or in the Asus ROG Swift thread) that somehow, due to a bug, either ULMB or Benq Blur reduction got enabled at the same time as Gsync or Freesync, and the results were not pretty at all...
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post #43 of 837
Blur reduction was disabled. Its fine on certain games, others, not so much. Its more like a dimming than a flickering.
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post #44 of 837
I have just bought this monitor and it looks great but have this same issue. The monitor will dim and then return brightness only with Freesync on creating a strobing effect that induces a terrible headache. All I could find on this issue was gsync related. Anyone else ever experience this?

Edit: This happens during gameplay.
http://techreport.com/news/27449/g-sync-monitors-flicker-in-some-games-and-here-why
Edited by Jwpawkits - 9/18/15 at 2:13pm
post #45 of 837
Yep, same issue. I think we are just sensitive to the issue more than others. I played BF4 and Dying light tonight without any flickering issues so it is definitely game dependent. I think it is just a compatibility issue and not a panel issue at this point. I just disable freesync if I encounter the flickering in game.
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post #46 of 837
Finally found a XL2730z. It seems that the monitor is already on the V002 firmware? Here's the screenshot:


Edited by Lanvin - 9/19/15 at 4:07am
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post #47 of 837
Yeah. V2 firmware also (apparently) had some kind of panel or electronics swap (people who sent in their V1 monitors got completely *different* panels back (e.g. they actually marked on them to see) that has much better image quality even at the exact same settings.

They still didn't fix the strobing issues, though. I'm almost completely sure the strobing problems at 100hz are simply a scaler bug. If Benq adjusted the old Mstar scaler from Lightboost mode (Vertical total 1502=lightboost crosstalk settings btw, even though this VT does not TRIGGER lightboost...it's sent to the scaler via the LC panel), they probably forgot to include the fallback strobe settings (e.g. whenever the vertical total defaulted away from the normal VT for the refresh rate, the monitor would switch to 60hz backlight pulse widths (strobe persistence=pulse widths) but strobe in sync with the current refresh rate).

I didn't actually realize what benq did with the original blur reduction until I tested Lightboost mode on my XL2720Z.
I found out that Lightboost mode on XL2720Z @ 120hz refresh rate is 100% IDENTICAL in strobe crosstalk, and persistence value, to Benq blur reduction at 120hz refresh rate, Strobe duty 009, and Strobe phase 000, and vertical total VT 1500. Like 100% fully identical. In benq blur reduction mode, there is 1 line of UFO's of strobe crosstalk at the top at strobe duty 009 and strobe phase 000 (this goes for ANY refresh rate with VT 1500 applied), and the exact same pattern is shown in Lightboost 120hz strobed mode (VT 1149=120hz lightboost).

http://www.testufo.com/#test=photo&photo=alien-invasion.png&pps=960&pursuit=0&height=-1

(note: Strobe phase = "Area" in XL2730Z, but the scaler no longer uses the vertical total to calculate area crosstalk anymore, which was a "feature" (you could call it a beneficial bug) of the older XL Z series, which had to do with lightboost communication with the scaler, it's why VT tweaks worked on the older Z series, but this was limited to VT 1502 (a 1440 translated screen vertical size according to the scaler internal information (1280x1440 was reported by the scaler on the 1920x1080 monitor when VT 1497-1502 was applied!).

(if anyone cares, the reason why VT 1485 would show "Out of range!" but still show a screen, was because the scaler would think that VT 1485 was 1920x1440, which is out of parameters for the monitor, while 1280x1440 is "within" parameters, but this applies to the OLDER Z series; the XL2411T, XL2420T, TE/TX and XL2720T responded the same way (same scaler, Lightboost mode used).

They simply adopted the lightboost signal for customizable blur reduction (with extra electronics and a wire to turn on the strobe signal) and used the same scaler tricks that Lightboost did itself, except benq blur reduction defaulted to the normal VT for the refresh rate (1144 at 120hz, 1133 at 100hz), which is why the crosstalk is so high without the "Lightboost" level VT 1500/VT 1502 tweak).

I know this probably makes no sense to anyone except PCM2, but if Benq simply forgot WHY the VT 1500 tweak even worked and didn't include the strobe settings from the old scaler (Mstar) into the new scaler (realtek), that explains the strobe bugs in this monitor.
Edited by Falkentyne - 9/19/15 at 11:55am
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post #48 of 837
Thread Starter 
Quote:
Originally Posted by Jwpawkits View Post

I have just bought this monitor and it looks great but have this same issue. The monitor will dim and then return brightness only with Freesync on creating a strobing effect that induces a terrible headache. All I could find on this issue was gsync related. Anyone else ever experience this?

Edit: This happens during gameplay.
http://techreport.com/news/27449/g-sync-monitors-flicker-in-some-games-and-here-why

Quote:
Originally Posted by SLK View Post

Yep, same issue. I think we are just sensitive to the issue more than others. I played BF4 and Dying light tonight without any flickering issues so it is definitely game dependent. I think it is just a compatibility issue and not a panel issue at this point. I just disable freesync if I encounter the flickering in game.

Can either of you record a video of it happening (with a phone or camera) so that others can visualize what you are talking about?
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post #49 of 837
Hope I'm not off topic here, but just got my 2730Z last weekend love it. Only issue is when I config the brightness/gamma etc in the software and save, it just seems to go back to the 100% brightness etc after I reboot. This software seems confusing and laggy, and the on board version doesn't have a "save" feature that I see. Anyone have some simple instructions for me on how to achieve this? Do I ditch the puck and the software? Thanks
post #50 of 837
Uninstall display pilot. Been buggy for ages. It's good if it works but tons of people have had problems with it.

You can either disable "DDC/CI" in the OSD or uninstall display pilot and just use the OSD to set settings.
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