ArabianVirtual_CEO wrote on Jan 14^th, 2017 at 3:43am:

Check to make sure you're not tapping your rudder pedals (if you have them) or manipulating the rudder. The CS T7's autopilot is very sensitive; even a slight rudder input will disconnect the AP. Let me know if that works.

There's a thought - I have CH pedals and they are well known to be "noisy" - I might try increasing the null zone in FSUIPC, once I have finished my current flight, which is in an A330  :)