Have seen that lately with spear, playing solo with no dedi server.

Im not releasing the spear if i'm not sure it will hit (and know how to target things at different elevations) and can literally see the projectile visuals going through a mob, usually wolf. Never noticed it at stationary mobs, only moving.

It does not happen often thou say 2-5% of shots, and the game runs smooth. Does not feel like lag, just "huh???" moment.