mil-sim horror game????

Hey all, the subject is basically the question. Are any of you aware of a mil-sim (or somewhat of a milsim) survival game? I know Arma 3 has some mods, but I just find A3 clunky and hard to manage content for. I am also aware of the chernobyl game, whose name escapes me... but it appears to have trouble running on modern equipment...

So I thought I would throw the question out into the ether to see if any of you may have a recommendation for me to look at.

Thanks!