Weird stutters every 10-20 seconds in Rocket League

Weird stutters every 10-20 seconds in Rocket League The problem is connected to my internet connection somehow even though I am in freeplay. When I unplug my ethernet cable after like 30 seconds I do not have stutters anymore and I can enjoy the game normally but as soon as I plug it back in, everything starts to stutter So interesting thing about this is that those stutters (which I repeat are connected to internet connection which isn’t bad) increase my input delay to 4 digits making me ghost any input or corrections to my movement which is super annoying especially during wall set-ups. Also when my ethernet cable is plugged in my screen likes to sometimes flash black for a split of a second. I use Epic Games Launcher and I do not have any of those problems in any other game, even Fortnite or Fallout. My specs are: CPU: 13th Gen Intel Core i7-13700K RAM: 64 GB of DDR5 RAM with speeds set to 4800MT/s up to 6000 SSD: Samsung SSD 990 PRO 2TB GPU: RTX 4070 ti (from gigabyte i think it doesn’t matter here) Liquid cooling for cpu: ENDORFY Navis F360 3x120mm PSU:Supermo FM5 750 W 80 Plus Gold MB: Gigabyte B760 GAMING X AX (socket 1700 ofc)(and no wifi card only ethernet) Windows 11 Reminder it doesn’t have to do anything with rl settings I think.. I changed video, gameplay even tried different regions, also tried many other system fixes, like disabling and enabling HAGS, changing dns, changing vpn and proxy settings and disabling them, turning of and on VT-d, doing many ethernet tests, reinstalling gpu drivers, clearing DX11 shader cache and reinstalling DirectX, flushing my internet connection history from what i understood, changing rl’s properties settings, enabling and disabling antivirus, trying to open rl as the only running app on the system, checking and changing hdmi with displayport and back to hdmi, checking controller issues, checking if mouse, keyboard or controller is the cause of lag, and many other little of my worthless tries like trying to see the error log of my system. Please I need your help, It is literally unplayable when I try speedflip on kickoff, my game stutters and I can’t do the flip bc of input delay. If you need any of video representation of my problem just ask below. Pl&Ty