...wicked:
Your post mentions that you still occasionally get "drop-outs" when recording. Your system specs along with the Octa-Capture and the settings you have posted would seem to me to be more than adequate to provide a stable recording environment. Could it be something else that's causing your drop-outs?
I say this because I too had issues with occasional recording (and playback) dropouts unless I set my ASIO to run at 44.1khz with a buffer size of (something like) 1024. This was even after I had upgraded to a powerful 4th Gen I7 processor based system to use with my Octa-capture. I tweaked and twerked (Yikes! Now THAT'S scary!) the Octa-Capture and Sonar settings for weeks until someone made a suggestion in one of the threads in this forum to set the "Minimum processor state" to 100% in the available "Power Options\Advanced Settings\Processor power management" on my system. That seemed to clear things up!
Once I made that change, it seemed I was able to reliably run the Octa-Capture at much higher rates (96khz) and much lower buffer sizes (192 samples) to get my total round trip latency down to just above 8ms. (Incidentally, with my setup, that sample rate turned out to be a big waste of system resources. I now run at 48khz with an ASIO buffer size of 48 samples for a total round trip latency of 6ms.)
Have you tried setting the "Minimum processor state" to 100% on your system yet? If not, maybe this will help with your occasional recording drop-outs.
Hope this helps,
Paul