Just an update for those who kindly made good suggestions for me.
I had to manage with the click delay I described, nothing seemed to help, sometimes i would go a whole round with no problems then get 5 the next round.
Anyway I finally got my macbook repaired and even though i still get the odd delay on the click, it happens a lot less. I just think it has to do with how well the hardware renders and deals with flash. This mac does it a lot better than my budget dell does.
Interestingly I have tried a few browsers on the mac and they all work well, chrome, ff, maxthon and opera. Fingers crossed but hopefully after a year now I can begin to enjoy the game more as it is meant to be played (I had a major issue with dots I mentioned on another thread and that is fixed too now on the mac, again it seems to be hardware issue on the dell and how it renders flash).
It is almost like playing a new game : )