When I have PSE Organizer up and running, it eats up RAM until it uses all the RAM available and crashes the cmputer. I set the amount of RAM to use in PSE very low, but it didnt make any difference. I also turned off video card acceleration with no change. Windows 10, Organizer 2020. You can see it was using over 18GB memory even though I have it set to 8GB in PSE.
The resource is not the RAM in this case, it's the 'virtual memory'. So what is important is to see how you have set your scratch disk(s) and the type and capacity of those scratch disks (next section in your preferences).