the new 1.22 and 1.23 are stage two maps (this versioning is confusing).
The 1.20 stg 1 map has a "fix" that changes the CL/OL delay so it is not shortened while the car is warming up. This fix didn't work for the majority of AP users with the problem.
There is a beta 1.21 stage 1 map with a new test solution for the stalling problem in one of the threads on Cobb's site in the Accessport Forum. I don't think Trey stated what was changed in that map, but trying that one is probably your best bet.