I think its like .7 seconds to perc ?
I don't like percs at all, but like a lot of things cqc first to fire often wins. So if you got shotgunned, or SMG'd or LMG'd or Carbined, etc at that range, you'd be dead in .7 anyways, and I kinda always thought that having to complete the arrest is enough of a balance to justify the additional rewards. I never saw the reason LTL should have longer TTS than comparable weapons' TTK.
Removing this ability still might be a good idea though, since it seems to be almost universally disliked, and you want players to have as enjoyable experience as possible.
(all this is just a personal opinion, and Im highly medicated lately, so if this makes no sense... dont be too hard on me!)