I have some problem for few days with rendering performance
First, i have a macpro 2 * 2,8 GHz Quad-core Intel Xeon with 12 Go ram (mac os 10.6.1)
i always use multithreading to render composition and i never had problem with it on aefx CS3.
My problem for few days :
my render begins well with all cpu at 100% but after 5-6 minutes, all cpu decrease at 10%.
Everything become very slow (switch to finder, access to the dock, launch safari, ...and rendering too of course).
I try to render the same comp several times with cs3 and cs4 trial version.
I don't use effects in this comp. Just one camera 3d with motion blur and focus blur.
I have the same problem with simply comp (just 5 quicktime /animation assembled)
I don't know where i have to look for :
Problem with my mac pro
Problem with snow leopard
Or problem with after effect
Thanks a lot for your help and sorry for my poor english spoken (i'm french)