Interesting, I am myself stuck in the mids 1900 (used to be 2000+), and I feel that my tactics are quite good but it's my positional understanding that keeps me under 2100.
My experience is that tactics is a spectrum. You can always improve your tactics, no matter who you are. There is no player who never makes tactical mistakes.
Whenever you feel like it's positional understanding that holds you back, that just means that your tactics are at a higher level than your positional understanding, so your opponents are less able to exploit tactical mistakes in the games you play. Once you improve your positional understanding, your rating will rise until you are facing opponents who are once again able to take advantage of you tactically.
Whenever you feel like it's positional understanding that holds you back, that just means that your tactics are at a higher level than your positional understanding, so your opponents are less able to exploit tactical mistakes in the games you play. Once you improve your positional understanding, your rating will rise until you are facing opponents who are once again able to take advantage of you tactically.