Hey there.
Running Ambassador latest, transferring players between similar servers without the client reset packet mod installed always takes between 2-5 seconds while the registry check is occuring.
However, I don't think this should be happening if I have chosen to specifically bypass the registry check, as the transfer will occur regardless when that setting is enabled (successful or not).
I think the registry/mod check (which takes the 2-5 seconds each time before transferring) should only occur if the proxy is not bypassing those checks, otherwise the player should be transferred immediately upon request.
The ability to transfer to similar servers in Ambassador has been a game-changer, thank you for the continued updates!