I'm currently using the Neon demo (non-HR) on Sonar 6 PE, and I don't see an issue with the latency. I placed it on a parallel drum bus, turned on the "draw waveform" function and Sonar seems to be compensating just fine. Sounds good too.
Now, I do have issues when I'm trying to run more than 2-3 instances on various tracks/busses. When I reach this point, I cannot even start playback without a dropout. Increasing the ASIO latency to the 16-25ms range helps here, but I do end up freezing/bouncing tracks to make it work.
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-Ben