Maps 'reset' areas when running them

When mapping T15+ maps, sometimes, while killing monsters, the map 'freezes' and resets area, but the mobs i already have killed stay dead. And also i run 'blind' in a map because it hasn't reset fast enough.

Is this a glitch of sought?

Also, sometimes when i finish a map ( if i'm lucky enough to that is ) when i portal out, the hideout map is like a mirrored floor

I have exactly the same problem.
Unplayable.

yeah, i can't even play on my own server, now THAT is unplayable with the above and game stuttering + mega lag

I have the same problem. For me, the game will freeze, sometimes with my task bar showing up (possibly changing to windowed mode while setting are still set to fullscreen), then when it unfreezes, the map progression is reset. The progression in the zone is not reset, just the map. This is happening at least every 30 mins. It's frustrating

I have this issue and it's one of the only things actually killing me in maps... Making it hard to gain any levels past level 90 and causing expensive maps to be wasted. Running 5070 Ti with 7800X3D. DirectX12

Starting to get bored with the constant map resets while in game now, i'm guessing alot of other people are too. Needs to be addressed asap before they lose more players