So I finally got this,
It did say video memory and didn’t mention paging file or virtual memory, but I thought I’d give it a go anyway because my main hard drive was looking a bit full.
Borrowed a SSD from my bro’s PC I’m trying to fix… Set the paging file to something huge like 199680MB
It worked… plus using a paging file on a hard disk thats not the same as Windows installation or UEFN/Fortnite and a fast SSD… It built HLODs in record time, what normally takes 28 minutes+ for that map on my PC took less than 10.
Sorry bro your mobo’s dead… can I have your SSD ?