So, as it turns out, Ardour 8.1 DAW (running ./ardev in gtk2ardour) seems to be quite buggy running jack audio interface and repeatedly crashes on my Arch Linux when I try to make my workflow a tad more complex. Pianoteq works flawlessly on the same audio interface.

I am thinking of using Reaper instead.

Since I have only really used Cubase and FL Studio, I'd like to know, does anyone have any experience with Reaper on Linux and the stability of it?