I’m pretty sure that is the way it was set up when I first asked this question. I had since changed it to use multi processing (render multiple frames simultaneously with min. allocation per cpu 1.4 gb)
If I uncheck multiprocessing, the only thing that would be different from when the problem was first noticed would be that I changed the folder that the disk cache takes place in which is now an empty drive.
after effects memory usage is set back to 1.2 gb and ram for other apps is .25 gb
I have also checked prevent DLL address space fragmentation
Hope this works, thanks for your help