Keyboard players have speed advantage over mobile/touch players on servers with PVP

This bug happen for years and still haven't been fix or even report. So basically, when a player during red color/damaging, they shouldn't able to receive more knockback from other players(sometimes dealing double hits) I was a pvper, and a slow tapper. I noticed players with higher cps aka spam clickers can deal more knockback. And players with low cps deal normal knock back, it's a big unfair thing for slow tappers. Please fix players during damaging can't receive more knockback. It's a big change for pvp community. It just so unfair...