properly configed fblit (as per fblit docs for os35/39) + cgx-aga provides a nice speed up and frees up chipmem. Although no luck using it with amiwolf
Back when I got my ppc card all those years ago, there were some rtg only apps in which some had a chance of working using the cgx driver and ive used it since this time. Isis mpeg/vcd player I think was one of them. Worked great for its time before frogger/amp were developed.
CybergraphXBugFix only caused me grief running it on top of cgxaga, but without installing it again re-testing stuff I cant remember what failed with it. I just put it down to patching something that isn't broken, at least with v4 libraries.