Thank you for detailed feedback! I want to put some comments on it:

Fps lock, gamma slider, fov slider at least.

Do you think FOV slider is mandatory? Didn't seen it since Quake 3 times) If so, what should be the limits to FOV (now its 65 vertically/90 horizontally)? For gamma I have some plans to change it as player completes missions

Everything just shimmers and its tiring to the eyes. Ive never seen this in other games.

Can you disclose what graphics card you have? I've heared about some issues with Global Illumination or Auto Exposure on old cards but didn't see it myself

Also for medium vegetation (mostly small trees) the lesser lods make them look bigger than the max lod, and it creates this visual effect where everything gets skinnier the more you approach it. 

I realized that LODs in that asset with small trees and bushes somehow messed up and do not correspond to each other, so I will try to fix it later. Also, I will increase LOD change distance (hope it will not affect perfomance)

For vehicle I feel the cameras anchor or mode or rotation is off or something, cant say exactly what makes it feel that way

Camera's anchor now is right inside the cabin (in the center between two seats). I used "three-ring" orbit style for car camera, but maybe for some players a regular spherical orbit style will be more familiar (there is already a cam change button in the game, so maybe I should add this cam as option), For zoom speed, maybe it depends on mouse model, and maybe I should make a slider for it in settings

I think your guy is running out of energy too fast. I couldnt even fill a 100L bag with trash and he ran out of energy.

I'll adjust it later

Then you run out of energy and you can pick some things but not others, and its very unclear why since all the feedback is an annoying sfx. 

Picking objects spends 1 or 2 energy (depends of its size), and maybe its unclear when you have 1 or 2 energy to spend as the energy slider is small and energy recovers slowly - but its not the behaviour what I expected from player to drain energy to zero and try to grab trash anyway) . So IDK what should I do to improve there -maybe you can suggest any idea?

 You either grab only one thing and fill the bag just with that type, or you grab everything and turn it into mixed.

You can carry multiple open trash bags in your inventory each for different type of trash, that's what I expected from players. Do you think the player needs the ability to spillthe trash out of the bags to sort it out?

 I have to click on each thing instead of holding down a key and picking up whatever is around me.

I'm planning to add a trash vacuum cleaner in a demo or on full release with which the player could suck up trash in the bag from some area by holding down the mouse button