I have a PBG4 Aluminum 1.67ghz/1.5GB RAM, running 10.4 Tiger, and 9.2.2 under Classic. I've been playing some simple old games on it through Classic and especially with games I get really bad performance, basically the whole program will pause for a second out of every 15-30s, plus I get general slowness and some serious graphics glitches. This even happens in what I would expect to be simple stuff like card games or old 68k games like SimAnt. I would chalk this up to just "emulation is slow", except my eMac, with less RAM and only a 1Ghz processor, running the same System Folder (I actually copied that one over to the PB to set up Classic), doesn't have nearly the performance issues. There's a brief little moment of lag now and then but on the whole its much smoother and faster running Classic stuff. I tried disabling some unnecessary extensions and stuff, mostly drivers for things I didn't need, and the awful bloated Stuffit extensions, but it had no effect. And OS X stuff, even games, runs fine, so it does seem a Classic issue specifically. Any ideas on how to optimize Classic performance?