This is reproducible on any solar Hunter tree. If your throwing knife is charged, the time between NORMAL melee attacks is noticeably increased. If your throwing knife is on cooldown, the delay between melees goes back to normal. To reproduce: Find any enemy that you can't kill in one melee, then melee it twice while your knife is charged (just do normal punches, don't throw the knife). Now throw your knife away and melee twice again. Notice the difference in speed between punches. Definitely an annoying issue in PVP. Found on PC.