I tested so many times with ping optimizer to lower my jitter and it doesn't work, I switched my ethernet to my main router's provider and it's much better than net duma, something is wrong with netduma r3 modem, no way the jitter is sky high, I also have the newer version v4.0.645, I try different stuff but nothing works, any advice? btw i don't even have 237.6 mbps upload speed so i have no clue why it's up there, i only have 1gbps download and 150 mbps upload from my provider.