In a different post, you changed your wifi band to be able to get a connection.
Do you know which band you’re running on now?
If you’re using your Librem 15 in an area where you previously had connectivity issues, you could still be seeing performance issues for the same reason.
Without knowing what your wifi network setup is like, it’s hard to troubleshoot this sort of issue.
At home I have a system acting as the primary wireless router for the house and a couple access point repeaters in other areas of the house to ensure we can always get a strong signal. The caveat to this is that sometimes a device doesn’t “let go” of a weaker access point when moving to a different area of the house and performance issues can ensue until it decides to pick the stronger one or I manually make it reconnect.