I suffered with this issue:
- taking about 30 minutes for opening blueprint asset editor (even it was just a simple widget)
- taking more than 20 seconds for “creating / copying / pasting” any blueprint node
- every work related to editor was so slow that I said “fxxk” every hour
the system spec was:
- CPU: 9700K
- RAM: 32GB
- SSD: 2TB
- GPU: 1660
what I have tried (not solved):
- let the unreal editor use local DDC
- let the system always use GPU with unreal editor (UE editor very slow with i5 6600K? - Feedback & Requests - Epic Developer Community Forums)
- turn off VCS on my unreal project
solution only worked to me:
- delete the project directory and create it from the start (I guess some bad sector caused this issue)