Blur Busters Forums

Hi,
I just got a LG c2 OLED TV that does 120hz. I notice VRR gamma flickering w/ frametime variances in games. In Skyrim, most of the time such variances are actually brief stutters from navigating game menus rather than regular gameplay (running around, attacking enemies). Because the game is better optimized, I can generally guarentee stable 120fps. So, I decided not to use Gsync for Skyrim.

Oblivion is different because it's less well optimized. Traversal stutter running around outside happen pretty often. There are cases where frametimes are not stable. I can mitigate this somewhat by decreasing ini settings, reducing mods, and capping FPS to 100. However there's no way any time soon to get rid of traversal stutter. VRR gamma flicker is still kindda bad even w/ those tweaks, which do help.

1. Is there any indication that any substantial fix is on the horizon? I tried fiddling w/ fine tune blacks and black stabilizer but they don't help much while making image quite different. Is QD Oled as prone to this as woled?

2. If I don't use Gsync and Oblivion continues to exhibit traversal stutter + some general frame time inconsistencies, will these issues be reduced to an extent if if upgraded to a theoretical 240, 360, 480hz OLED display even if my frame times don't improve?

To rephrase the question: Are there benefits to having display refresh rate being way higher than achievable framerate if VRR is off?

Thanks

Just noticed there is a new OLED forum section. I think this post might fit better in that section. Oops. I read just now also that Chief Blur Buster thinks 240hz OLED displays have less VRR gamma issues vs 120hz.

BoredErica wrote: ↑

16 May 2023, 02:48

Just noticed there is a new OLED forum section. I think this post might fit better in that section. Oops. I read just now also that Chief Blur Buster thinks 240hz OLED displays have less VRR gamma issues vs 120hz.

Moved to OLED section.

No known fix, at least not any that have been publicly disclosed. Even reviewers that first drew attention to this OLED characteristic no longer mention it in reviews for newer OLED tvs/monitors.

If you want a stable VRR image, your only options are LCD based displays. If you want better colors and contrast for fixed refresh content, you sacrifice VRR.

The only use case I can currently imagine for VRR on an oled is in emulation, especially in something like MAME where games have native refresh rates ranging from like 48hz to 71hz in all sorts of arbitrary increments. You could count on the emulator to maintain good frame timing on sufficiently powerful hardware and VRR would save you from having to create custom resolutions to play these games at their native refresh.

Keep in mind it's an overlapping venn diagram.

-- VRR flicker isn't very visible on all models. On my Corsair Xeneon Flex, I haven't been noticing VRR flicker as much as I thought I would;
-- VRR flicker can occur on some models of LCDs due to a LCD-decay phenomenon, especially in situations where LFC cycles on/off/on/off, or during large frametime spikes at high framerates.

The worst VRR-flicker on the worst LCDs is worse than the least VRR-flicker on the best OLEDs...

I suppose that must be true. Hdtvtest did review one of the 240hz monitors and had a brief segment on vrr Gamma flicker. One of the test scenes had nothing perceivable, and the other were demonstrably less than he's shown for the LG TV size screens (presumably operating at 120hz).

I wonder how much of a role the max refresh of the panel plays in mitigating this.

BoredErica wrote: ↑

15 May 2023, 03:27

will these issues be reduced to an extent if if upgraded to a theoretical 240, 360, 480hz OLED display even if my frame times don't improve?

Yes, if you can keep triple-digit framerates, it is greatly mitigated. Games maintaining 100-240fps (e.g. System Shock Remake) do not exhibit OLED VRR flickering issues, except during manually loading/saving games.

I have posted some info here how to mitigate your OLED VRR flicker, which is easier to do with 240Hz OLEDs:
viewtopic.php?f=25&t=12164#p95017