Just a quick reply as I'm getting screenshots and such before running sandra.
The Apogee is my master clock, Tascam as Slave. They are connected via BNC cable. The digital output from the Apogee is via an AES connector. The clocking is extremely stable from the Apogee throughout the system. Unless PT deals with clocking differently, I don't know anything about it as I haven't seen any settings. Searching the HELP file only shows returns for HD.
The system I'm dealing with is working completely perfectly at low latency with Sonar X2 and X3. It also works perfectly with Vegas Pro 9 and Vegas Pro 12. (I have produced about a half dozen full length records this year on this system in another DAW as well as a ton of video projects).
In the meantime here's some screen shots...
In this image you can see the little gaps in the wave file behind the device popup. Those are the glitches.
Here's a MP3 of the sound of a DI guitar.
Turning off Ignore Errors didn't make any difference in behavior or give me any reports.
The sandra thing takes awhile to run so I have to sign off.