Today even with 6.3 I get connected without any hickups.
Installed 6.5 on the remote PC and tested some more.
Remote control works great as usual, even with the 6.3 host; yup, I tried that too.
So the backward compatibility is OK.
With the 6.5 host the screen builds up a lot faster. I guess it has to do with the new driver in 6.5.
Great job! Now one is able to work with a Windows 8 or 10 host without frustration.
File transfer still is slow. Looks like it was just because of the local LAN connection I tested it with yesterday that is was a bit faster. Not much traffic on the LAN was the reason I guess.
Today with the remote PC, it is its old self again being slooow. Even on the local PC changing a directory is a pain in the <bleep>. I really hope file transfer gets its makeover soon.
I still have to check out a bunch of changes in 6.5. The auto status check is nice. No more need to click anywhere to see which hosts are online.
I hope the status is accurate, because in the previous versions it sometimes indicated a host to be online while it wasn't even powered. Probably something with the server cache...