Today's update claims it fixes some of the speed problems.
EDIT: I just tested. Hilariously, Hunting party is faster, but now playing treasures has a silly delay for some reason and cards pop up on the screen for what seems like an extra half second. I'm not sure what to say.
http://forum.makingfun.com/showthread.php?7854-Release-Notes-v-2-0-42&p=40200#post40200Features and Improvements
If someone challenges you with specific kingdom cards the dialog you get now shows what those cards are. Also, the rating system used for the game is displayed. (1617)
Overhauled speed settings: made cards that revealed multiple other cards play much faster, eliminated unnecessary delays, made operations like shuffling and opponents' dealing faster, made pause times that show important information longer, made speed slider differentiate speeds better, smoothed out card animations, etc. (575, 864, 928)
Added sounds for receipt of a challenge or chat message. This can also alert you when your game is going to time out. (1449, 1604)
Layout improvements with 16:9 and 16:10 screen ratios when the game log is turned on, so that the supply cards aren't made so small (1523)
Show the number of coins to be gained after playing Pirate Ship (907)
Show which opponent quit the game in the results screen (1452)
Hides the Save Kingdom button if the game you just played used one of your saved kingdoms that specified all the cards (1603)
Hides the Rematch button after a game if one of your opponents disconnected during the game (1661)
Selecting Rematch after a campaign game now gives opportunity to get extra turns (1446)
Display the Campaign name and Act number in a banner on the top of the sub-maps (1588)
Display completed games differently on the act maps for campaigns
Updated paths and textures for Base Set campaigns
Links on main screen intended for beta have been removed (1376)
Bug Fixes
Fixed: Can't select cards in the "More Cards" window after playing Journeyman, Mystic, Wishing Well, Doctor, etc. (1643)
Fixed: Forgets Expansion Biases on Seek Screen between games (1631)
Fixed: Promo cards were being ignored when generating kingdom in Seek games (1654)
Fixed: Some Hinterlands cards were missing from the Choose Cards screen and from the store page. (1629)
Fixed: Dark Ages store page was missing the shelters and individual knights (1448, 1665, 1666)
Fixed: Draws were recorded as wins for some games (1554)
Fixed: Graphics problem when zoom in Black Market deck (1590)
Corrected How-to-Play link in Help dialog (1645)
Fixed issues with Sign Up (1633, 1644)
Fixed issue with email for social login convertor (1268)
Website, etc. (1561, 1609, 1628, 1632)