i have the same issues, couldnt even print 2 hours or so...
the problem came after i build an "hero me Gen5" part cooling with 2x 5015 coolers wich i run at 33% cooling
but after some research i red that the cooling from the CPU, scales with the part cooler, so after that the cooling was significant lower and i got a lot of shifting/freezing mid prints wich after the CPU board was cooled off i can resume with no problems
i reinstalled it on the pins with the extruder cooler and it was 95% better (100% for the CPU cooling fan), now with this iam trying to put up 2x a 120mm fan in the bottom cover just to know that it wont overheat's, even when it will get hot inside the room it stands in.

i report again if the fans are under there and how it works