Suddenly very long startup time. How to find the cause?

Hi there,
I don’t know exactly what I changed but suddenly my project takes around 20 min to start up (every time). I got some Metahuman characters in there and the project folder is around 6GB (I don’t know if that could even effect the startup time). I had projects with a similar size before and they all loaded within a minute.

How would I find out what causes the issue? Is the startup even logged somewhere? I have copied the output log right after the editor loaded (see attached). If anyone could take a look at it and point me towards the issue I would be grateful.

StartupLog.txt (89.2 KB)