Remote Play Together suddenly started having bad connection all the time

[XXVexxaOvoraXX]

About a year ago I've been playing fighter games with my friends on Remote Play Together. Everything was working fine, there were no major problems except occasional lags. Now when I want to host for my friend there are connection issues and my internet started lagging so bad I sounded like a robot. I have the same internet, same computer, same game, same settings, same friend as year ago, but for some reason now the connection is so bad it's literally unplayable for my friend. I tried connecting to my friend instead and it worked just fine. I also copied his settings to be sure and it didn't help. Did something change this year that could be the cause of lags? Can anyone help me fix it if that's possible?

[_I_]

how is your internet upload speed?
remote play uses 30-50mb/s upload at host, and download at client


if its using lan connection, make sure windows network is set to private not public
if using wifi, disable wifi isolation on router settings
host and client are connecting to the same router (similar ip, 192.168.same.different, and can ping each other ip)
steam -> setting -> remote play -> allow direct = auto/my/all, not disabled