Since Unreal 4.26.2 I’ve been experiencing the most horrid of freezes: UE4 just stops responding, and is entirely unable to be closed via any measure. Not task manager, not windows command console, not anything else. I’ve tried everything. The only thing that’s left for me then is to completely restart my PC.
Thus, I then have to log in again, open my work communication programs again, open my references again, open Photoshop again, wait for the Files to load, then open Unreal engine again, look for the correct content folder, and load the level again, only to realize that, again, I’ve lost all the work I previously did.
I’ve had times when Unreal crashed every 5 minutes, but that was easy on my nerves compared to this… At least I could press “Send and restart” and continue working within 3 minutes, but what I’m experiencing now honestly takes the joy out of work for me. I have to work with Unreal Engine every single day, and til now, that has been fun… But since these freezes started I kind of dread going to work in the morning, and frequently experience meltdowns.
These freezes appeared out of nowhere, and have happened on several different projects. I’ve looked at the Logs nearly every time, but so far I’ve not seen anything that is consistent. Also no Bug messages or Errors.
The last line in the Log is something entirely different every time.
The most frequent causes are in this order:
-Saving/Autosaving and then going into Landscape Editing Mode
-Autosaving sometimes induces freezes without any further action
-regular saving induces freezing sometimes
-Interacting with the Landscape in any way sometimes induces freezes, yet not consistently and not always.
-pretty much any action like click on something in the outliner, clicking on something in the viewport, doing nothing or breathing can also (sometimes) induce freezing.
I’ve tried:
-verifying Unreal in the Epic launcher
-updating my graphics driver
-downgrading my graphics driver (to a version that a collegue with the same GPU and same UE version uses, he does not have any issues.)
-Clearing all data caches, plugins etc.
-migrating the projects/scenes to clean projects
The lack of error messages to work with makes it so I have absolutely no clue how to diagnose this… I’m at my wits end.
The one thing I’ve noticed (although I can’t say fore sure) is that this only starts happening once a project is uploaded into Plastic SCM Source control. (I’m not using the UE plugin though, I control it manually via Gluon)
But even if I migrate it back to a clean Project, that is not source controlled, it keeps happening.
So it appears any scene that has this issue will be “corrupted” once it starts happening.