Motion blur.

Action games that prioritize animation over function esp without a cancel. I recently went through the Batman Arkham games. As someone who is more of a twitchy action game player like a DMC or Ninja Gaiden. It prioritizes the function of combat and you can cancel mid move if needed. I know Batman is not a stylish action game nor is Spider-Man on PlayStation. Just that combat annoys me. It feels slow to me because of it. It doesn't need to be DMC but let the function be the priority not the animation. I press a button then wait. Press another button then wait some more. Just let me do my thing.

Chromatic Aberation. I despise it. It makes games look worse. Yet every fucking game does it for the past decade. I despise it as much as bloom lighting of the 6-7th gen.

I really find skill trees and weapon/armor upgrades in most modern AAA games a pest. There are games that do it well, and some that need it (RPGs for instance), but for every game that implements the mechanic well there are 4 where it just makes the experience worse. DOOM 2016 is a game I love, I also found a lot of enjoyment in the modern God of War games, but why did they need to shoehorn this upgrading crap into the games, just let me slay enemies. Or if you have to, then just let me find the upgrade through exploration, instead of skill-points I need to decide what to spend on. It is also a more satisfying, that your exploration gets rewarded with a unique weapon/armor instead of some orbs, where you can decide which of your existing gear you want to upgrade.
It doesn't help that so many games also have terrible menus, that are confusing to navigate in, another thing people don't complain enough about imo. Between skill trees, gear changes and upgrades and crafting, some of those games make you spend more time in menus than actually playing the games, which is driving me nuts.

Respawning enemies/stuff.
I want to be able to find everything and do everything, and I want my actions to feel like they have meaning (in the game world). When things just come back I just do not think that it mattered. Grinding Exp is something I despise to the point of where it is even possible to do it takes a lot of the fun out of the game for me.

Now that we are shitting on Rockstar, I have another complaint about these two games specifically, but also games in general and open world games particularly. Too many checkpoints! I remember how people used to bitch about how when you failed a mission in GTA, you had to start all over again and drive to the beginning of the mission, or at least start the mission all over. They "fixed" it by throwing in a lot of checkpoints, but the consequence of that is that the missions all become generic. It completely takes away the gamer's creativity and flexibility in how to tackle a mission. Half of the fun was prepping yourself for the mission and making a strategy.
It is not only Rockstar though, too many games save your progress faster than you can take a breath. It is a good thing sometimes, certainly, some older games are too masochistic, and some games are better off being more forgiving. But I don't understand why gamers celebrate this development to such an extend. I always meet the argument that it is "artificial difficulty" when a game makes you lose your progress. I say, if failing has no consequences, succeeding isn't rewarding.

Boss fights that are just about learning the pattern and then executing right dodge-dodge-attack combo twenty times.

Another thing is difficulty setting being just about how many hits you and enemies can take. I'd want them to change behavior, start taking cover and circling behind you etc. acting "smarter", while easy has enemies just running at you. Maybe even rather give them different weapons or have an enemy more here and there, instead of having to hit them few more times.
Similarly in strategy games, I hate it that difficulty means just opponents having more troops/resources or acting faster, instead of changing tactics, reacting more to what player does and using more complicated/advances strategies (unit combinations, building towards strategy).

Yup, made a thread about that way back.

Modern Capcom lol. I can't stand their games. Visuals, art (except Street Fighter), controls, some animations, stories, direction, puzzles, exploration, music, difficulty are all meh at best. But I'm somewhat interested in Pragmata and modern Monster Hunter, and am hopeful Kamiya will do Okami 2 justice.

As a fan of Onimusha who had all 5 PS2 games, I tried to hype myself up for the new game but the more I saw and learned the less I cared. Not enough excitement to even try the demo, but I should.

I'm giving this post a thumbs up. Not because I agree (I actually think Capcom is in the middle of a new golden age and that 2026 may be its best year ever) but because I feel it perfectly answers the premise of the thread. I figured this thread was unanswerable, since video game enthusiasts complain about everything, but I've never seen a complaint about modern Capcom. So, while we respectfully disagree on the answer, I can't imagine a better answer, as strange as that sounds :)

Ooh that’s a good one. Yeah I’m actually kinda the opposite. I prefer when enemies respawn— otherwise games like Breath of the Wild become very dull very fast.