brundlefly
The MIDI plays normally with pedal up rendered properly here though I had to load a new instance of TTS-1 as something caused my X3e installation to report TTS-1 missing for the existing instance. Also, I slip-edited the clip to full length as it was set to end after a pedal down as received which made it sound like the pedal was stuck at the end.
In any case, I've already recorded plenty of piano with sustain in X3 to know there are no issues with it in general.
The first thing I would suggest is to try increasing your MIDI Prepare Using buffer to 500ms if it's at the default of 250. Preferences > MIDI > Playback and Recording.
Thanks for looking into this. Just so we're perfectly clear, did you listen to the audio, one recorded in X3 and one in 8.5? Did you then play the midi track and see if the sus pedal moved in the up position like in the 8.5 example? After playing the midi example, which audio example did it sound most like?
I've tried increasing the MIDI Prepare Using buffer to 500ms from the default of 250 and I also tried moving the other buffer from 64 to 128 and then played the midi example. It sounded the same.
You're right the clip was a much longer clip and it was exhibiting the problem with the long clip and I shortened it to make a shorter example, so the slip editing fix isn't the problem.
It doesn't exhibit this problem every time. I haven't been able to figure out exactly what kind of playing causes this. I tried playing a chromatic scale using the pedal for each note, playing at different tempos, moving the pedal a little differently sometimes and it all played back perfectly.
I tried playing both hands playing busier chromatic chord patterns and it played back fine. It seems like more complex playing with the sus pedal moving at more unpredictable times triggers it. I've only been using X3 for about 3 weeks and just noticed a lot more sus pedal errors. Many times I fixed them by punching back in. Other times I moved the sus pedal events.