UE 5.4.3 lagging on blank project GTX1080 5950x 64gb ram

What exactly did I misunderstand about your post?

You said you have performance issues, then you gave your specs. Even if a project is empty, there are core processes happening.

Also, you’re a nasty person and I truly hope this thread gets to remain so people know not to help you. (Though, judging by your demeanor, and the fact that your account is brand new, it’s clear you’ve already burned many bridges and accounts already).