OK, so I use FSDT live update twice and it re-download again on the second time but faster. Now what? Do I do it again?
If you launch it for a 2nd time after it has downloaded something, it shouldn't download anything, this is way I see here.
But it's not as if I just test from my location and that's it, I also try using a VPN to connect the various random places around the world, which connects me to different Cloudflare nodes as well (I can diagnose that, so I'm sure each time I switch to a different VPN, I also get a different Cloudflare download node), and I always see the expected behavior: no downloads at all, just checking for files.
At the end of it all, why not use the "offline updater" all the time.
If your node is still out of sync, that's the right option for you, we'll keep the offline updater updated as soon we are sure all nodes are ok.