Video framerate running slow for iMovie and WoW after upgrading to leopard

Question

I have a pretty standard powerbook g4...
Model Name: PowerBook G4 12"
Model Identifier: PowerBook6,8
Processor Name: PowerPC G4 (1.5)
Processor Speed: 1.5 GHz
Number Of CPUs: 1
L2 Cache (per CPU): 512 KB
Memory: 1.25 GB
Bus Speed: 167 MHz
Boot ROM Version: 4.9.0f0
Video Chipset Model: GeForce FX Go5200
...And I had it doing all the normal computer functions (internet, mail, iLife '06 programs) as well as playing WoW. I then install Leopard and iLife '08 and now both my imovie and WoW framerates have plummeted. (As far as the game goes, all the video options are currently at the lowest level, leading me to believe it is the OS causing the slowdown.) Is there a settings fix or software upgrade for this, or should I downgrade to Tiger?

Answer 1

HI Michael and Welcome to Apple Discussions ...
Yes, Leopard can slow down a drive. Here's something to check before you consider reverting to Tiger. Open Disk Utility from your Applications/Utilities folder. With DU open, select MacintoshHD in the panel on the left. Click the First Aid tab. Now, look at the bottom of the window where it says: Capacity and Available Never allow the drive to fall below 20% available drive space. Leopard requires a minimum of 9GB of drive space alone. Using iLife/creating audio/video files takes a tremendous amount of CPU energy, let alone drive space. If you start experiencing apps freezing and crashing... you might want to revert to Tiger. Try only using one app at a time and keep an eye on available drive space.
Carolyn L-)