@Sunshine I'm attaching the screenshots of pings from pc to router over lan

@Sunshine The ping from connected pc with cable is the same as on laptop with wifi when I ping the router but when I ping like other devices on network the ping is normal "<1". The ping spikes like...

I am conected to router with ethernet cable and whenever I ping the router 192.168.0.1 i get ping spikes. I tryed pinging from other devices and from wifi too and the spikes are still there. Is there...