Hi,
i basicly have the exact same problem as described here:
[BUG] Flicker when “Sharpen Image” is activated - Technical Support - Diablo IV Forums (blizzard.com)
this is noticable when fps matches the monitors refresh rate at 165hz, and as mentioned in the thread gets more noticable the higher the sharpen image setting
decreasing graphic settings in any shape doesnt help
bright flickers also happen when loading up the game or generally when fps stutters occur
d4 is the only game that i have played where this effect is observable so far
/edit:
enabling v-sync via nvidia settings seems to have dealt with the worst of it now (ingame v-sync doesnt seem to do anything?)
when starting the game or experiencing bigger fps stutters i still get bright flickers though