alanti: When I used XP, I would pull back on the swing, hold and wait for a few seconds before hitting. I use Win 10 now, and it took a lot of tinkering to optimise my laptop for playing WGT.
I can vouch for this and the fix is in Flash. I was forced to use my VAIO laptop for a spell and it has XP with only 940 MB RAM. It was definitely an exercise but I was able to get a decent meter. It all revolved around browser editions and Flash versions and if you're not up on how to monkey with Flash versions, it could be a nightmare trying to get that decent meter.
I have another laptop, identical to the one I have used for this game from the beginning, and I chose the free W10 upgrade for that one to see what it was all about. FFS, I still don't have the game right on it because of the nuances of W10, not the least of which is something they now call File Ownership, or something like that. It's a Federal case to try and delete files now, like Flash.
I know there's W10 users here that play just fine on it. (I'll figure it out when I have to, W7 is working just fine on my main lapper.) They are the ones that should be helping the OP. He's just a little bent and I can understand why.