Certain scenarios.Does this flickering occur all the time or just under certain scneario?
To trigger it, I have to be playing an HDR game, then toggle or cycle through the built-in HDR modes on the monitor. Then put it back to an HDR mode that has local dimming. Then go to dark areas of the game, and those areas will flicker. If I bring up the OSD on the monitor, the backlight gets brighter and the flickering goes away. If I turn local dimming off, it goes away too.
It kinda looks like adaptive sync flicker but worse, but I know it's not since turning off local dimming stops it.
As long as I do not change the HDR modes on the monitor, it will not happen, and local dimming works great.
I also can replicate it in just general Windows 10 by turning on HDR, then disabling Adaptive Sync in Radeon Settings.