one thing that I have noticed in x1, x2 , and now x3 is that dpc latency will run just fine, but what I ve learned in sonar is that you've got to click "p", then config file, the very last line reads
dropoutmsec.... all three come with a setting of 250, and they don't make many computers that will not drop out at that setting with all the real time f/x going on . 750 is where I keep it and the drop outs and crashes have stopped with this one setting.
once in a blue moon I ll add 512 to the already 1024 playback buffer when mixing like 60 some tracks
another thing I do is set my computer up for best performance when mixing and mastering. no problems with the record buffer using studio capture (also 1024) and asio reported latency of 921. I do not check enable read caching or enable write caching.
recorded bit depth and render bit depth stay at 32 as they have no baring on the fact that I usually record at 24-4800.
but sense sonar 8.1 these basic settings haven't changed much and are usually the basses for toggling a new install into high performance gear.
I have i7,win 64 bit, 16 gig , sp1, studio capture, sonar x3, bluecat,blue tubes, pro channel add ons. using run between 25 and 70 tracks with bus count, all running with pc galore.