GTA 5 online: Lots of Hackers/Modders, Overpowered vehicles such as the Mark II Oppressor, Tryhards, Grievers, Trolls, Toxic players
Skyrim and Fallout 4: LOTS of bugs and glitches
Rocket League - Toxic Players and Trolls (not as much as other games but still...)
DMC 5 - haven't quite thought of one yet
NFS: Heat - scripting which makes it impossible to win some races (Not unique to NFS, is a feature in modern EA titles to simulate "difficulty".
MK 11 - lag in online games (only game that I have this much of an issue with).