Glitches and crashes (Dota 2)

Recently, Dota 2 has become very buggy, but not only. I very often flew out of battles, and when I re-entered, I flew out again. It happened that I was shown the same action several times. Everything is fine with the Internet, I played on the worst connections without problems. The computer is suitable for the game, putting the graphics on low settings, it lags all the same.
Help where you can. Still, I didn't plan to quit Dota 2 yet :)