I am having no problems like that with WGT. In fact it seems to be running better at the moment than it has for a long while.
I use Comodo Dragon or Firefox as my browsers, and I use these two browsers for NOTHING else, exclusively for WGT. I clear my caches etc every two days as well and it all seems to run just nicely. I would say that I have nothing else running when I play WGT, no music, I play music to keep me company on a laptop beside the PC. I do use Skype however, and unlike some others I know of I get no problems because of that.
Maybe I am just lucky or its good computer housekeeping, I don't know, but I see posts telling of this problem or some other problem, and think I must be one of the lucky ones. But there are 10's of thousands on here playing who seem to have no bother at all.
I am no computer expert, but maybe its time for those with problems to look to their system setups and not keep blaming WGT, who are a convenient easy target ! WGT have given us a great game which we all enjoy, not perfect maybe, but way better than any others I have seen around. So sort your own house out before you take the easy option and blaming them !
Now wheres my helmet ? Sure to get a battering from some for this !!
Byeeeeee !!