UE4.26 to UE5.0 Migration Issue - SIGNIFICANT FPS DECREASE

Alright, so manual migration has led me to believe (after hours of setting up and testing) that it absolutely fixes the stuttering, but we are left with a significant drop in FPS.

Overall the game runs slower even when exported (development package).

The FPS drop is something I simply cannot figure out.

I’m getting CPU stalls in the profiler, which I managed to fix last time by literally buying a new CPU, and I have one of the best ones on the market which makes it all the harder to figure out why the CPU stalling is happening in UE5.

In case UE5 on its own offers worse performance for games, which I highly doubt, that would mean this is a problem that needs to get fixed in a later version.

Edit: can no longer edit this topic for some reason so I made a new one for the FPS problem.