Hi everyone, I’m running a small home network on a MikroTik router with RouterOS v7 and overall connectivity is fine for most services like streaming, email, and general browsing. However, I’ve noticed that a few specific HTTPS websites either load very slowly or fail to open completely unless I retry multiple times or switch networks.
One consistent example is my bank’s official site, which I use mainly for checking my FAB account balance. On the same devices, the site opens instantly when I connect through mobile data, so I’m suspecting something in my MikroTik setup rather than the site itself. I’m using basic firewall rules, NAT, and FastTrack with no advanced filtering, but I do have some address lists and connection tracking enabled.
I’m trying to figure out where to look first in RouterOS. Could this be related to MTU, MSS clamping, FastTrack behavior, DNS handling, or TLS inspection issues? I’d appreciate advice from anyone who has seen secure or banking websites behave differently behind MikroTik routers and how you diagnosed it.