On one of my project on UE5 EA2, adaptive build is disabled and now compilation takes ages;
I triple checked everything on the subject (build / target.cs),
Valley of the ancient project, and other projects adaptive compilation works well …
Anyone has this problem before?
Some observations,
not linked to UE specific version, but UBT.
(Which makes sense as new projects got this behaviour)
It seems like, not 100% sure,
UnrealBuildTool/BuildConfiguration.xml keeps settings it has been fed into;
even after removing them.
Manipulating options (bUsePCHFiles) with this file made adaptive build come back (and compilation time is finally back to happy)