Slow performance, need help

I have slow performance when I remotely RDP into Home laptops, it’s >200ms when I ping the home win7 computers from a remote win10 box, and have frozen problem when I try to click out a 2nd tab on chrome on the home win7 computer, this is insane… I see people could even play games, so their speed must be way faster than me. Anything I can check to fix? My comcast connection has very fast speed, download could be 600Mbps, though.

I guess win7 / win10 has nothing to do with the slowness, anyway. Anything I can do to improve?

Thank you!