Emeton Interesting stuff. I am wondering if this timing issue occurs when one is using a DAW for live playing/recording. E.g. when the inputs are fed into the mixer, the mixer output into the DAW, then back to the mixer, and out to the speakers. In this case, there would be some time delay for the DAW to input and output back to the mixer.
In our case, we are currently not (yet) using a DAW for live playing. We are feeding all inputs directly into the Zoom L20 mixer, then from the mixer directly out to the speakers without any DAW. There is a wireless transmission in the picture above (we use Xvive U3 to avoid cables in a specific area), but that should add only around 5 milliseconds or so. Meanwhile, the Zoom L20 mixer records in 48KHz to SD card. Later, when the session is finished, the individual tracks from the SD card can be imported into a DAW if desired. I just did that the other day for fun for the song "FromABuickSix."
On the other hand, in the track "FromABuickSix - Remastered using FL Studio" there seem to be indeed some timing issues, I mention this because one of my bandmates also mentioned them. Thus wondering: a) do the timing issues for live playing also exist if one is not using a DAW for live playing, and b) could I have possibly introduced them while remastering the track "FromABuickSix."