This is by now, a well documented and thoroughly discussed critical issue with the 4.19 version of the engine so I will keep the description of the bug concise:
- Users with Nvidia cards (typically GTX 1080, GTX 1060) are experiencing regular stuttering both inside the editor and in packaged builds.
- The stuttering worsens the longer the editor/packaged project is open for.
- The issue happens typically on drivers newer than 385.69.
- The issue did NOT exist in version 4.18 with these drivers and therefore this is a critical regression.
- This problem is worse in version 4.20
There is a well documented and active discussion of the problem here:
I am going to roll back my drivers and continue working using 4.19 in the meantime but I would just like some confirmation that somebody at EPIC is looking into a fix for this neglected issue.