Scav accuracy/reactions

So I've been playing EFT for over 4 years now and I've seen scav reactions and accuracy change here and there.

One thing I wish would change is to give them a more realistic reaction to a players presence. Personally I feel they are way too alert and can see you a mile away and what seems like track you, meaning it seems like as if more than once they have spotted me, I hide and go out of my way to flank, only to have them facing me and 1 tap face shot me before I can even hit the trigger.

Secondly, what the hell is this 1 tap with a mp133/toz from over 75 meters away with buckshot? That is frickin annoying.

Perhaps I've just played the game so long I've forgotten about something or just completely missing it.

So my question to you all is, what are your opinions on the scav reactions and accuracy? I'm curious what everyone's opinion is.