Just in case this might help someone ... I used to use IE and had game crashes all the time ... my daughter told me about Google Chrome and I tried it and love it .....
The past 2 weeks I've been having giftbox 'issues' w Farmville

... just knew it was 'their' usual bugs .....

Daughter told me a week ago to uninstall the 'old' Google Chrome and then reinstall it > said their newest 'version' was better >>> I'm not computer savy and thought that they say they update constantly ... Well yesterday I uninstalled and reinstalled it back and ...
I CAN TELL A DIFFERENCE ON ALL MY GAMES

Even Frontierville has quit crashing!!!

.. and the issue on FV was fixed too!!!
So for anyone having game issues ,,, maybe try uninstalling your browser and re installing it .. might be that somehow your browsers got 'corrupted' enough to cause slowness and loading issues

can't hurt to try ....

Just a thought ..
Blessings all