First of all, congratulations!! I am really a fan of FSLabs A320, but I have to say you make it! A330 is really a good product. It is far from AS A320.
But, at my first flight I had a really annoying bug: the A330 maintained for a while the cruise level, but after some time the AP deviated the nose pitch up and down a lot of times with variations above 1000 feet from the planned FL, and unfortunately the overspeed was called one the cockpit and, of course, master warning was enabled. So, I followed the protocol for AP incoherences during high level flights from Airbus: disabled AP1, disable AT and maintained the nose pitch with some amount of thrust to reach stable flight. It was all ok until now. The plane became controlable. Then I switch ON the AT and then AP1. All switches of SPEED and ALT were in MANAGED MODE. Some minutes after......again the same problem. My A330 didn't follow the vertical profile as it was on CRUISE PAGE on FMS. On the Airbus checklist and on the FSLabs A320, after those actions above made, the AP would must act as it was for. But.....A330 didn't. So, I turned off P3D, reseted my computer and did the same flight, but without Active Sky and with CLEAR SKY with no turbulence.....So the A330 performed the flight correctly for about 30 min on the cruise level...then I stoped the flight. Then I've change the weather to Active Sky in real world conditions......and the problem came out again!! So.......probably this is how A330 AP's calculate the wind effect on the plane. Please, verify this issue cause I can't fly in real world whether conditions either with Active Sky or other selection except CLEAR SKIES. And.....of course......my P3D is 4.5 and all drivers were updated! No problem with no other add-on.