Rising the virtual memory did not change anything.
What did you rise it to?
24 x 5 = 120gb plus a bit more. say 140gb
and is your drive an ssd?
Basically you need a 256gb ssd or more.
there are other things that can be the issue.
set the cards to 280 power
and core of +20
ram needs to be under 10000.
i think that is about 800 to 1000 + I forget as I only have 1 3090 set to windows.
you may be throttling due to too much heat and high ram numbers.
along with 5 cards running.
what is the psu you use?
2000 watts are hard to find
if you are using a 1600 watt atx like a corsair or an evga you may be just a bit underpowered.