Long story short: 2 routers-main- TP-Link Archer AX55(wifi6), 2nd (access point mode) TP-Link Archer C6(an). As testing I set up 4 SSIDs each router 2,4 and 5Ghz,as tested working great at maximum of my network and around 20ping, troubles comes with wired clients coming from Archer C6,it has under half of download/upload speed and ping goes to 200-500ping, I just dont get why wired connection is that much worse as wireless, I would expect it other way around. Is there any explanation or fix? Thx a lot