This might be the same error I have, I pasted my stack to UE 5.3 Crashes in different scenarios with the same error. - #3 by TadParty (Don’t want to spam the same info everywhere)
Would be very grateful for any help in any direction
I also migrated our project (from 5.1 in our case). The project itself started on UE4 and had to endure a couple of conversions already…