I tried Windows reboot; no change.
I tried RTFS Most; no change.
I tried reverting to CoyoteWT; MIDI levels higher, closer to the RTs, but still a little low.
I tried VSTSynthFont64 with a different soundfont, lower again, though perhaps a little louder.

I tried reducing the mixer volumes (still MIDI) and saving, the first few reductions worked sensibly, the 3rd or 4th the volume jumped high again. This does appear to be related to saving whilst playing. If the song is playing, whether the volume jumps or reverts to normal seems to be substantially random. It's a much more conspicuous effect if the mixer levels are set low ... if they're around 90 the change is small, if they're around 40, the change is dramatic.

OK, I've just thought to try that last test again with CoyoteWT instead of VSTSynthFont64 and with CoyoteWT the level appears to Not change if I save whilst playing.

I went on to try similar with Garrita Aria Multi, which was very loud, but didn't change on saves when playing, I tried sforzando, but it's a nonsense as a default synth. That said, it didn't change volumes on save whilst playing.

Jazz relative beginner, starting at a much older age than was helpful.
AVL:MXE Linux; Windows 11
BIAB2025 Audiophile, a bunch of other software.
Kawai MP6, Ui24R, Focusrite Saffire Pro40 and Scarletts
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