Playback problem

[toronjaasesina]

Hi, I have the next configuration


I have this problem, when I play and I move a something (like a plugin window, a region etc) PT became slowler, It does`t work like when the project is not playing...I checked plugins compatibility and It was ok., I setup the playback engine using 7 cpu at 99% but it doesn`t change.

Any Idea about it??

I install snow leopard in my PC 2 weeks ago, and I notice this issue yesterday, I installed PT again and nothing change...

ASUS p6t, geforce 9800 gt, intel I7 920, 6 gb ram ddr3, digi 003.
PT LE 8.4, snow leopard 10.6.4 (x64)

hard disk 1 WD 1 TB CAVIAR (200 GB MACHINTOSH HD - 800 GB LIBRARIES)
hard disk 2 WD 500 GB BLUE (Projects folders)
Hard disk 3 WD 500 GB BLUE ( video files)

[toronjaasesina]

I forgot this:

I format all drivers as MAC OS PLUS (CON REGISTRO)
Perhaps this is not the best format...I am new on Mac so I`m not shure..