Thanks very much for the comprehensive analysis :-)
The multiple instance problem would certainly explain why I couldn't recreate this on a clean file earlier today, as it only had 1 track. However, the template I've been using for years has many fluidsynth-dssi instances and I've only seen these problems recently. Oh well, these things happen sometimes I suppose.
Have just cloned fluidsynth-dssi and tried to build it but was met with various errors and it saying I didn't have things installed which I do in fact appear to have. I'll need to look into this further before testing with Qtractor. In any case, will post back if I still encounter problems with the new version.
FYI, I tested switching between projects (2) above) using Calf Fluidsynth and had no crashes at all, so your suspicion about fluidsynth-dssi being the culprit looks to be correct. The sessions also load much faster - previously there was a lag of a second or two each time.
Thanks very much for the comprehensive analysis :-)
The multiple instance problem would certainly explain why I couldn't recreate this on a clean file earlier today, as it only had 1 track. However, the template I've been using for years has many fluidsynth-dssi instances and I've only seen these problems recently. Oh well, these things happen sometimes I suppose.
Have just cloned fluidsynth-dssi and tried to build it but was met with various errors and it saying I didn't have things installed which I do in fact appear to have. I'll need to look into this further before testing with Qtractor. In any case, will post back if I still encounter problems with the new version.
FYI, I tested switching between projects (2) above) using Calf Fluidsynth and had no crashes at all, so your suspicion about fluidsynth-dssi being the culprit looks to be correct. The sessions also load much faster - previously there was a lag of a second or two each time.
Thanks again for the info.