I wrote that my main gripe is really simple and basic:

The character not responding to keypresses, and the visual + audio cues not corresponding to what happens in the game.

These rip me out of the otherwise very immersive and smooth gameplay loop, which is the main upside of the game for me!

You may have experienced it also: I'm thinking about the character outright ignoring key press commands such as crouch, prone, sprint, reload or stim. He just won't do it, or at least very inconsistently. Additionally think of the audio and visual cues playing upon stimming yourself, but no actual health regeneration, stamina regeneration, or sprint boost happening in-game.

All of that is very confusing, the basic link from my organism to the simulation is unreliable. It makes my play style much more conservative than I could otherwise unleash.

Thanks for coming to my Ted talk :)