I've read that the autoloader design of Russian tanks was a source of severe problems in operations; the autoloader itself often catches and injures/maims crew if used while the tank is driving over bumpy ground, and the need for keeping ammo rounds in the turret is just asking for trouble; but it's worse in real life than I could have dreamt...  I mean, unless you are on the side FIGHTING the Russians...then it's just an amazing fireworks display with jack-in-the-box ending.

https://news.yahoo.com/ukraine-decapitating-russian-tanks-due-090752778.html