Hello Sean,
I mean position correction (playercharactermovement). You can see the corrections if you type in: p.netshowcorrections 1 in the console.
Make sure that the two computers you’re testing on are not on LAN or WLAN.
Here’s a video of what I mean: Movement Correction, networking bug. - YouTube
Here’s a demo project: Google Drive: Sign-in
B - Create server,
N - Find servers,
M - Join server.