Hi @alex.kourelis , thanks for your bug report and sorry you’re experiencing problems with Play+. There are a lot of variables in play here, which could affect the sync and MIDI USB. I’ll start addressing problems one-by-one and hopefully we can improve or resolve them…
We would need more information here. Try the following guidelines and please let us know if it helps fix the issue:
Check under KNOWN ISSUES, part about Audio/MIDI over USB.
I cannot reproduce this, although the latency of the recorded audio is heavily influenced by following parameters:
- Buffer Size and Driver Error Compensation settings in Ableton Prefereces > Audio > Latency. We recommend lowest possible Buffer Size for best results and Driver Error Compensation = 0.
- MIDI Clock Sync Delay setting in Ableton Preferences > MIDI > MIDI Ports > In or Out (depending on which way you’re syncing). Here signals should be synced manually for best syncing results, just by listening and adjusting.
- It also depends whether you’re monitoring In or Auto signal on each track that you’re recording, you will hear different results and possibly also record differently.
- There is also Delay Compensation and Reduced Latency When Monitoring settings in Ableton Options menu, which could possibly also affect the sync of the recorded audio.
Finally, the way Play sync is implemented, the first beat will never be perfect because of the nature of manual start of playback which cannot be predicted by the sync algorithm. Therefore we apply sync compensation after the 1st beat and following beats should become more stable and constant.
In my tests, I would also get such large delay (late) of the first beat with highest buffer size (2048 samples). But using suggestions above, I could get a stable sync working.
Please let me know if any of this helps you resolve the problems.