Another point with Wi-Fi is that the dominant latency issue is in Windows itself... "Auto Network Discovery" is enabled by default on machines, and pings every 3-4 seconds. That process should be disabled on machines (even non-DAWs) and if you connect to another machine, it should be a manual process, not automatic. I have not used BT enough to know if a similar "auto detect" function exists, my experience has always been to manually pair things.
Another latency issue is any program with an "auto-update" embedded into it... these should be set to manual start for similar reasons. Any open connection will prompt these to also ping in the background, which is another reason why "internet connection" gets a bad rap. I am not sure if such programs would try to use a BT connection, but is another thing to keep in mind.
Both of the above relate to machine setup rather than the connection itself.