I'm having fun with the game so far. First CoD since the first Modern Warfare. Came primarily for Blackout but may end up playing regular multiplayer more depending how things ultimately get balanced and optimized.
Performance is pretty mixed. On Saturday when I first installed, the game ran great. 80-120 fps at 1200p, mostly maxed settings, 4670k, 1070ti, 16GB ram. I did get an out of memory crash, went and bumped up my page file size since it was almost nothing, seemed to be fine after that. Earlier this week grouped up with some friends for Blackout, performance was OK for 3 rounds, then it just went to crap. Lowered settings, didn't seem to help. Restarting the game helped a little. Kind of the same thing last night, OK for a bit, then just downhill. Reading around it looks like higher core/thread counts generally seem to help, but overall there doesn't seem to be any consistent reason for the highly varied performance across all types of setups.
As far as the game goes I wish there were a few tweaks to further tone down some of the arena shooter carryovers in Blackout.
I think healing is too fast, and there should be an appreciable cooldown. Shootouts at range, particularly in late game, have little consequence other than armor damage because you can step back behind cover and instantly heal between peeking like nothing ever happened. You can't push somebody across open ground because of this. I do like that you can heal while moving.
The wing suit is really cool, but the jump phase at the start of the match is weird. There's very little reason to not jump almost immediately because of the distance you can cover and the speed at which you can do it. This can make group jumps frustrating. You can't afford for somebody to take a moment inspecting the path and choosing a spot. I guess this plays more in to CoDs nature, but I feel like it hurts Blackout.
Inventory management sucks in regards to moving attachments between weapons. I watched a friend play the beta on a console, and for that it works amazingly well, but it's definitely an unnecessary console carryover here. I like that you have a backpack or you don't, and that you operate on slots, and the way ammo is separated out works well too. Does anybody know if you can cycle equipment at the press of a button? I don't like going into inventory to change grenade type, but I didn't notice a bind for cycling equipment.
Audio is weird at times. Standing partway down a hill I can sometimes hear a person on the opposite side as though we were both in a room together at the same elevation with nothing between us. Horizontal positioning generally seems to be good but vertical not so much. Not as much of an issue with gunshots though. Footstep volume needs a little boost.
Overall I like a lot of what distinguishes Blackout from PUBG, but I think some of the mechanics aren't properly balanced for the open map. Interface and control need a little work. Performance needs a lot of work. Apparently Treyarch CoDs have a bad history on PC. Hopefully things will get worked out.