I tried ICR2 on my 486/66. It had 32 Meg. I could only run high rez
with ALL detail off. Even then I felt my poor machine was being overtaxed.
I found traction to be unrealistically low. I soon lost interest until I
upgraded to my new machine.
I have never had less than 32 Megs of memory, but I remember someone
posting that if you didn't have enough memory, you had problems at the
longer tracks. I don't remember if the the problem was that you couldn't
race, or couldn't tape. Try Elkhart Lake, that's the longest track there
is. If you can run there, and tape there, I don't think more memory will do
anything for you.
Larry