I know this may be obvious and you may already installed them but do you have the most recent drivers for your tablet? I'm only asking as I too had problems drawing small (but this was in Illustrator and mine is a Huion H610 Pro). I then updated my drivers and everything is good now (so far).
Here is the page for your tablet ... https://www.huiontablet.com/inspiroy-q11k.html
Select the 'Download' tab further down the page to find the Windows drivers.
Hope this helps.