Which ini file tweaks?
Edit: Do you mean the GTP track.ini tweaks? No, I haven`t.
NR2003 patched to 1.1 runs fine. Only GTP mod crashes, so I doubt it might be graphics or memory related.
Did you try NRTweak? I run it with NR2003 and then copy the modified files to the GTP main folder, and it worked always fine here, so GTP never crashes. The files involved are:
I use the same name for my player at both games and never had a problem with this procedure.