Thanks a bunch for the feedback! I may just see what I can find in a nice low latency 4G kit and go with that.

I'm running the G15 keyboard display applet that shows load on each cpu core as well as memory usage. Keyclone is definetely getting the affinity right in my case. (In fact, I had to take care of that early on when all sessions were on the default setting - the machine ran very poorly.)