With all due respect, I have a hard time seeing how it could not be the same error: in both cases the game crashes instantly at wave 1 after the map is switched, and appeared after a patch where you changed MaxObjectsNotConsideredByGC...
From what I read on UE docs, this variable "MaxObjectsNotConsideredByGC" looks like a dangerous way to optimize the game, and the arbitrary value of "179220" does not make me very trustful... It is optimizing performance for the specific configuration that your have used during profiling, but at the expense of risking crashes for other setups. In particular, that makes it very mod-unfriendly, I hope this trade-off is known...