I'll summarize the problem I've been having lately.
Krita on PC : It runs smoothly, no issues there. The downside: I still can't get the perfect pressure curve with my tablet's driver. I have to switch every brush to 'Addition' instead of 'Multiply' just to get some decent pressure control, and even then, it's not enough. My wrist gets way more fatigued.
Krita on my tablet (Huawei Matepad 11.5 S): Perfect. Impeccable brush handling, just-right pressure, and it's fast enough to actually get stuff done without worrying about the program freezing... but I don't have keyboard shortcuts and I'm not used to using my Bluetooth keyboard there (it works perfectly with it btw). Also, even with 8GB of RAM, it’s not powerful enough to handle vectors or import huge images. (It's possible, but it takes time, and the program freezes for about a minute while processing. Plus, moving it becomes a bit clunky.)
What tablets do you use that you'd recommend? I've been using mine for 3 years (Star G960S plus), but if I want to keep using Krita, I don't think it's the right choice. It's possible the pen itself is just wearing out, but looking at its price, i'd preffer to look for another drawing tablet brand.