I had constant crashing with custom pagefile on my rig (min 2gb, max 20gb). When returning back to system managed it was rock solid again.
Don’t know if that is isolated case with my rig, but it helped 
Rig:
TR 1950x
128GB RAM
1080Ti 11GB
2TB SSD
CORSAIR AX860 80+ Platinum PSU
W10 PRO
I hope that the information will help someone
Kind Regards,
Nino
Vektra d.o.o.
Is the powersupply big enough?
RC does usually not make use of virtual memory.
In full load there should be less than 600W power draw.
Specs of PSU: https://www.corsair.com/us/en/Categories/Products/Power-Supply-Units/ax-series-config/p/CP-9020044-NA
I believe that PSU i s more than enough.
Changing pagefile to “system managed” instantly fixed crashing problem :o (tested on 2 different rigs, 2 different licences)