Hi all! I have a similar problem. The MAWI also writes about this. They claim it’s a UE5.1 bug and it’s not fixed yet.
Crash appears when there are many instances of nanites in Land Grass Type.
This is a problem for large maps. I fixed it for myself by removing the part of LGT where it is not needed.
For example. Crash appears when more than 20% of the map size 2017x2017 (120 scale) is filled with LGT.
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