There's definitely some people using wallhacks. I just had a round on Manifest where this low level player pre-fired at me while I was crouched hiding behind a shipping crate. I'm positive I wasn't spotted and I wasn't moving. No way did they hear me. He looked confused when he wasn't able to hit me. I could see this because I was hiding behind the corner of crate, he pre-fired, didn't get a hit, walked past the edge of the crate so I could see him, and he spun around to look behind him for a quick second, then I killed him.
I'm noticing a lot of weird instances like that. Pretty sure there's some low key cheaters. I'm also convinced that there's a priority aimbot, or it increases in strength when encountering players with higher KD or something. I've been targeted in other games and that's what got me into looking up to see what people are using. I'm not trying to brag or anything. It's just that these people are barely positive, like 7-6, yet they laser me while I'm behind cover barely peeking them. There will be other players around and it really does feel like they hyper focus me at times. Maybe I'm paranoid, but I have had it happen in other games. I'll tell that story if anyone is interested lol.
I haven't seen any rage hacks like I've seen in BFV, so that's good, but there's definitely some sketchy players out there.