I\'ve used both platforms for many years, and I can only say...
Back up the entire operating system directories, and backup the registry (from the Start menu select RUN. Type \'Regedit\' (no quotes).
In the first menu, Registry, select Export Registry. Copy it to a safe place (a non-system directory.)
Test your Giga system. RUn your most complicated sequence and check the PU usage. Remember tit.
Now install your game. Reboot the computer. Play the game a few times. Reboot the again.
RUn GS. Run the same sequence. Is the CPU isage the same? Are there any latency, delay, FX changes you can hear? If everything seems fine, you\'re probably OK.
Uninstall the game (Start-Settings-Control Panel-Add/Remove Programs)
Test the system again. If there is still a difference, run Regedit again and reimport your directory.
Whew! A lot of work, and probably not necessary. But this is the belt-and-suspenders safest option to let you work.
Buy another PC for games!
Hope this helps, and isn\'t too confusing. It\'s really not as troublesome as it sounds. OTOH, I use my PC for DSL Internet, Photoshop, Giga and all my \'business\' stuff, and my Mac just for sequencing and I admit I know I\'m not getting top performance from the box (333 MHz,) but then I plan to upgrade to a 2GHZ box just for audio sometine in the next few months, so I\'m pushing the edge a bit.
I do wish you luck! But you can reduce the requirement with some judicious pre-planning.
I\'ve been a computer \'professional\' for 20 years, but stopped trying to keep up with the hardware/OS race about 8-9 years ago, when I found myself spending more time with the machines than with making music!
It\'s OK to have a day gig, but it\'s GOT to stay at the office!
In the same vein, the basic operation of the Mac and the PC really isn\'t that different-it\'s the same tasks, with a different way of accessing them.
The more you know, the better you can prepare to resolve problems. And the one definite rule is-there WILL be problems.