Re: VDPAU + Composite - slow on GTX470 (some videos)
I will add a bug report tomorrow when I am able, but I am experiencing this issue as well.
I have two systems that are identical from a software standpoint (openSUSE 11.3, KDE 4.5.1, kernel 2.6.34, nvidia driver 256.53, etc etc).
System 1 has a 9800GT
System 2 has a 480 GTX
System 1 can use VDPAU without any issues along side KDE's kwin composite effects.
System 2 freezes up when using VDPAU in bursts of 5-10 seconds where the system is completely unresponsive, then returns for 1-2 seconds, then freezes up again... so on and so forth.
I will post the necessary logs ASAP... just wanted to add to this.