Yeah, I just don’t know then. Even the cheapest I’ve seen, Surfshark, advertises 1 Gbps locations but if you don’t have one, you don’t have one. Do you have a spare machine that you can boot a live USB & set up a WG peer to hardline to the Flintv2 via its auto-generated confs? WG is technically all P2P so it shouldn’t technically matter if the Flintv2 is the ‘WG Server’ in a S2S as long as the routes are good. See below for a template:
You could also check by & even self host Open Speed Test.