I have a surplus of RAM. Can I ask ArchiCAD to use more RAM?

[Gus]

Watching the Windows Task Manager Performance of my CPU Usage and the Memory being used, I realize that I never even get close to using all the RAM my computer has available. Is there any way I can let ArchiCAD know that it can store more data in RAM or do more background processing and storing of that processed info in my surplus RAM? Any thoughts on this would be interesting to hear. I upgraded to 32Gb of RAM and now I'm realizing I shouldn't have, but if my computer lasts a long time or if I find a way to utilize this extra RAM I won't feel as bad about the wasted money.

[Laszlo Nagy]

In the Task Manager, if you right-click the ArchiCAD.exe file you can use the Set Priority command to change its priority.
According to Windows articles on the web, increasing this Priority will give more resources to the given process (which might include more RAM).
Actually, I have never tried it myself so please use it as your own risk. There are different opinions whether setting it to the highest value (Real-time) will slow the whole system down or not. In any case you can set it to 1 or 2 notches higher and see if that makes any difference.

There is another thing I just thought of. On my machine I set the paging file (virtual memory) to a relatively low value, like 1 GB. This way the machine cannot swap your data from memory to the virtual memory and will keep more data in physical memory. The reason I did not set it to zero is because I don't know, maybe it needs some amount.
So this is another thing you can try.