Multyengine aircraft throttles won't return to idle

[gporzio]

Since the 7.5 update the throttles of any multiengine aircraft will climb to the firewall but will only slide back halfway. On single engine aircraft, only throttle 2 works. This happens only when FSUIPC is running. If I exit FSUIPC (even with the simulator running) all throttle control goes back to normal. All other controls function normally. In the log, I see that a "Cirrus" preset is being used (?) although the aircraft being used is the PMDG 737 800. Same thing with Fenix Airbuses or twin turboprops.Thanks for any help. I have tried to find a topic with this issue but have not been able to find it.

FSUIPC7.log

[John Dowson]

4 minutes ago, gporzio said:

Since the 7.5 update the throttles of any multiengine aircraft

There are no changes in the 7.5 release that could cause this, and that was released at the beginning of December now...have you had this issue since then or have you only recently updated? You can try an earlier version to confirm if you like, e,g, https://fsuipc.com/download/Install_FSUIPC7.4.17.zip

10 minutes ago, gporzio said:

he throttles of any multiengine aircraft will climb to the firewall but will only slide back halfway. On single engine aircraft, only throttle 2 works. This happens only when FSUIPC is running. If I exit FSUIPC (even with the simulator running) all throttle control goes back to normal.

So your throttles are not assigned in FSUIPC? Can you be more explicit please - what do you mean by 'but will only slide back halfway'? And what do you mean by 'On single engine aircraft, only throttle 2 works'? In a single engine aircraft, there is only one throttle (throttle 1)....

11 minutes ago, gporzio said:

In the log, I see that a "Cirrus" preset is being used (?) although the aircraft being used is the PMDG 737 800.

That message is informational and just letting you know that that preset isn't available for use as the name has too many characters. It is not being used (it is not even available for use!).
Also looks like you manually reloaded the presets as that message is logged twice.

Can you please activate logging for Axes Controls and test again, and show me / attach both your FSUIPC7.log and FSUIPC7.ini files. Just load the aircraft, move the throttles through the full range and back again, and then exit before attaching files.