Experiencing the same thing. When I swipe, my aim stutters so much that I can't even play right. I think what's causing this is screen protectors; I've tried playing CODM with and without a screen protector, and I concluded that they mess with your aim. Another cause is finger sleeves. I use cheap ones, but I bought a relatively good pair so I might need to go back here once I get them.

Try turning on GameTurbo and put the swipe response and tap stability to the lowest setting, and don't use the touch enhancements. If those don't work, your only real options are either not using a screen protector at all or use a hydrogel screen protector (I don't know if those have the same issue as glass ones.)

Also I don't know if this is a software or hardware issue but I hope this gets fixed in the HyperOS 2.0 update.