Providing near-instant target locking (it is around 0.1 and 0.2 s; I'm not exactly sure) and homing projectiles makes the improvements on weapon ergonomics and removed sway obsolete, since we have no option of turning off homing projectiles.
I installed this mostly because of improved ergonomics and sway, but I can't benefit from them at all because the targeting is so quick that I need to keep aiming on/off to avoid using the homing projectile.
If you're looking for a homing stim pistol, this mod works fine and does exactly what it advertises. The locking is very quick and the homing is strong, making this mod (mostly) enough to heal the targets as soon as they ragdoll (in your client, you will always see ragdolling bodies clipping into terrain, homing takes care of this, great addition).
If you went for the other QoL and buffs the Stim Pistol desperately needs, which are included in this mod, well, you can't run away from the homing aspect. I wished you could turn homing on/off, so you can use homing option for far shots and ragdolling people (so you can actually heal people when they are ragdolling; vanilla makes it impossible). Having homing stims 100% of the time is a bit too much for me. I could deal with it this mod if the homing took 2-3 seconds to lock, or if the near-instant lock if it was toggleable on/off.
Other than these minor complains, I had no performance issues in the missions I tried playing with this on, and no visual glitches.
It works fine on my end