unreal engine editor fps drop

same problem i show in this video fps dropping problem in unreal engine 5.4
https://www.youtube.com/watch?v=hVGHP3JvMCI&t=9s

Hello, Welcome to the Forums.

I’ve seen this happen in the past for people who are using G-Sync. Are you using G-Sync? Or any sort of “GPU Controller” software? (Like MSI Afterburner)