This has been a problem for like a month now.
Whenever I playback a project, when it reaches a MIDI track (piano in this case), and I stop playback, and I play any instrument track with MIDI input monitoring, it sounds weird and compressed, like it has a really bad high-pass filter on it, as demonstrated in the video. Any subsequent playbacks have the same audio problem unless I open the settings, after which the problem just disappears. It also only seems to happen on this specific template I use (I use Spitfire Audio BBCSO, Addictive Keys, and Garritan Personal Orchestra 5 in this template).
I tried to find the cause of the issue. It wasn't the effects I was using (only using reverb). I also was able to replicate the problem across several sample rates, so that wasn't it. I'm stumped, any suggestions?