What? No way. Knock back finally has some uses. Your suggestion is only trying to solve the symptoms not the root cause of the disease: the servers. What they need to fix is the servers not the game mechanics that would be pointless if they were changed to 3 meters. The travel distance attached to a knockback serving as a split second duration longer than regular stuns works perfectly too because knockback skills have less stun time than skills like fear etc. The only thing not working as intended is the deteriorating servers.

8m is the minimum. When you charge at my tiny, porcelain Mag char, clad in cloth with your humongously muscular, sweaty, hairy DK holding a huge sword and wearing a 4x4, I wanna make sure I knock you back far enough, so that you're out of mele range. That way I have a chance to buff up before getting inevitably stunned, OS, DSwinged 6 times and executed. Still hopeless but a split second and 2 meters extra is sometimes enough for a Mag char to survive the bloodthirsty mountains of meat.

Clench and Draining Shot knockback is not that bad but Javelin knock back is really buggy and near unbreakable this patch. It's as bad as old NB Fear before they changed it not to make you turn and run away.

Please feel free to increase the stun time and make these skills knock people DOWN instead of back, ala stamplar javelin or (sort of) streak and fear. In PVP it's going to get CC broken but in PVE there's no harm in giving players more time if they need.