Slow load in windows (edge or mozilla) and really really fast in Ubuntu ( Mozilla)

Hi community.

I just have a weird situation which when I access from windows 11, edge or mozilla browsers the system seems to hold or having a slow response.

But, this is when it get interesting, same server, but now using Ubuntu and Mozilla, it works blazing fast.

Any thoughts which could be the reason for this? It’s the same server, also, If I connect using Android webpage it works also fast, seems that windows is the issue.

Thanks.

May be wormed/virused windows installation ?

Hi @FHenry, thanks for respond.

Not at all, 3 brand new pcs without AV Showed the same behavior, I was checking the console in Ubuntu and it shows CORS messages. but I dont know if I’m going in the wrong direction