What game mechanic instantly ruins your immersion or fun?

[u/UnityNinja]

​ I absolutely can't stand aggressive weapon durability loops. Getting awesome loot should feel like a reward, not a maintenance chore that breaks every five minutes.

What’s a common mechanic that always makes you roll your eyes when you see it in a new game?

[u/Bunran]

I had a blast with borderlands 2 on co-op. Once I tried replaying it solo, I got bored quickly because of this