We spent most of our week discovering 2 kickstarters that just landed, The Witcher and Isoforian guard.
The Witcher is very easily becoming a slog when playing at higher levels. We played a 4 player game that lasted 3 to 4 hours. It is a lot of fun, but the sweetspot for the game feels around 1 or 2 players. Lastly we are thinking anout adding some extra homerules, as you can now win the game by only fighting lvl 1 monsters. This is also something I see a lot of on BGG forums.
The Isoforian guard is so much fun! Really like the bag drafting gameplay, and the story. The game is tougher than we thought. We wanted to continue with the story, but we got our asses kicked and learned that grinding might be needed to get some better equipment and abilities.
We played the Witcher a few weeks ago, both with 2 and 4 players. Funnily enough the 4 person game went relatively fast, because one player was not afraid to take risks and rush monsters, rather than collecting more cards, trails, monster weaknesses and exploring etc.
It still took a while because it was the first game, but I also got the sense that the game can be very fast, if at least one of your players is willing to take risks and forces the others to move faster.