I just went co-oping but the game froze for both of us as we were drawing cards, even though we could still communicate. Relogging did this: Spoiler Pretty sure the server went down. Edit: nvm its fixed now, but that was a really strange occurrence which I have not seen before as it seems nobody was affected by it in MP but rather it was just me and my co-op partner.
Yesterday I saw the client freeze during the draw phase: loot fairy, without co-op, got stuck after default move of my second character. Closing the the Steam client and trying again worked for me.
I agree in the last 2 weeks+ the game has frozen on me more frequently (virtually never had problems previously). In my case it's not a complete freeze, I can still hear chat sounds and open the menu, but I can't navigate, play cards, see animations, etc.
This, this keeps happening to me but I havent mentioned it to anyone because I thought its just my poor internet connection. Though my guess is that this is unrelated to my original post in this thread.