Unreal Editor lag / Gui problems

I just bought a new RTX 3070 and also did a driver update after installing it. Now, Im facing huge problems in the unreal editor: moving nodes is lagging, after 15-20 minutes GUI-popup-windows not working anymore. Anyone facing the the problems? Or is my GPU broken?

I’m facing the same issue like you. I did a lot of searching and figured out a temporary solution.
Change the options below for ue4 editor inside your Nvidia Control Panel

1.Low Latency Mode->On
2.Power management Mode->Prefer Maximum Preference
3.Vertical Sync->Adaptive

But note that it’s just a temporary solution which means there’s still a little bit lagging but more acceptable to me.

If Vertical Sync to Adaptive causes some fps unstable issues, you can also set it to On.

There’re some issues more confused. For me I have 2 screen, if I dragged the blueprint editor window to the secondary screen then everything works fine smoothly and no lagging. Somebody says you can downgrade the driver version to about 45x.x to fixed the issues but I also need some features the latest driver provided so I got no choice to live with these issues.

I found the final solution here. All the lagging and stuttering issues are caused by a new feature Multiplane Overlay which was introduced in Nvidia Driver 461.09. So all you need to do is to disable MPO by referring to this page
It works for me with RTX3070, Studio Driver 462.31, MPO off

Thanks man, you are a god!