Quote Originally Posted by Amrathe View Post
Rift seems to be very CPU intensive for the CPU selected for the primary thread.

What I did to reduce my lag was to set each Rift client to use a different CPU through the virtualized .cfg files (I never have gotten around to letting ISBoxer set the CPUs because setting them in the virtual.cfg files worked so well).
This game is hard on CPUs. Just running a single client at Ultra graphics can use 65% of my Q9550.

I am setting the affinity through ISBoxer and can confirm that it works, each core spikes as that client comes on line.
The main client gets cores 1 and 2, client 2 gets core 3 and client 3 gets core 4. With that setup cores 1 and 2 sit around 85-95%, cores 3 and 4 sit at 100% most f the time.

I tried some other setups like no affinity for all 3 clients and that resulted in each client using 33% of the processor, that killed main client FPS so is no good.