Kept the game running a while and played quite a bit last night. After a few hours the game started to slowdown during the draw and discard phases. Wasnt too bad and a quick reload of the page fixed it, just thought i would point it out. Only thing i run in the background other then the usual antivirus is youtube in the background and steam.
Same for me in terms of slowdown. Nothing running in the background other than the usual Zonealarm / Avast etc.