that I mean… windows increase the pagefile automaticly, but only if some preconditions are given ( e.g. mentioned here ). Very often the drive which contains the pagefile have less free space and windows does no increase the pagefile. Then we often recommend to set forced min value and a sufficent max value ( as example 8192 / 32000 ). So far I know Windows use pagefile also to defrag the memory, and therefore it is imporant in special for MSFS.