In order to fix this mysterious issue I have to ask for your help.
If you suffer from the room to room slowdown, and unstable framerate (going above 60fps) please answer the following questions as best you can. I am trying to pinpoint what can be the cause of this issue.
1; What OS are you using?
2; What are your system specs, CPU, RAM, GPU and graphics card VRAM(This especially)
3; What antivirus you use if any.
4; Monitor refresh rate.
5; Did turning the new option to "0" helped any?
6; Is it a laptop or other similar non desktop computer?
The more of this I get the more likely I can pinpoint the cause of this issue and fix it, unfortunately I wan never able to reproduce this issue myself, so I have to rely on those who suffer from it. All help is greatly appreciated.