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So I'm having a problem while importing models, it gets to 25% and then it crashes. At 23% memory maxes out(32GBs) followed by my C drive maxing out at witch point it crashes.(I only have 23 Gbs left on my C drive) thing is UE is not installed on my C drive. My vault cache location is not on my C drive, My Project file is not on my C drive and i changed DerivedDataCache to off the C drive and it still overflows. Any Ideas?

(+1)

Did a fresh install of windows so i had enough space, still crashes but this time at 45% and with no error message or crash report.

Can you try splitting the source directory up into a couple of smaller ones and importing those one by one?
That should at least help narrow down the problem somewhat, while also remove the need to reimport the same things over and over again.