There are many posts about how to monitor your CPU while playing. Is your computer a good one?
I'm only curious because the putting screen has moving dots and is more CPU intensive, I believe, so this may be part of the issue. The other shots don't have that complex grid animation.
ps For me, Comodo Dragon is the best of the 4 browsers I've tried. Then Maxthon, then IE then strangely Google Chrome came is last.