The 'losing time on your turn' bug seems to happen to quite a few people.
Personally, I think it's lag, and others dissagree, but noone seems to have a diffinitive answer.

For now, I suggest turning all the in-game options to their lowest settings, and see if that helps.
Other programs running at the same time may also slow the game down, so close any other programs if you can.
Also make sure you're playing the latest version (should say ver 2.5B in the bottom left of the loading screen).

I think the one-action-point-attacking-twice bug is known, and only happens on the first round with certain actions (I think if you use the shield, but I'm not sure).

The ranking list is full of bugs, but they're a non-priority for the developers, so just ignore them for now.