I would wait before getting X4. I bought it and it's unuseable for me so far. I also play games a lot, specially Left 4 Dead 2 and some oldies. You should keep investigating, maybe getting some Catalyst betas.
Been waiting for this one to see if anything changed, and apparently it had. Did my normal uninstall, safe mode, cleaner, reboot, new driver. After that, no more hang on "Initializing Command Manager..." text. Happy
Is the BattleField 3 issue caused by PSP or PSP's install? It's been a while since I've used Catalyst Control Center, but isn't there a setting in the video section that lets the program that's active control various settings?