Depending on what you're using (iMac, MacPro etc) and the year of model, you're probably experiencing polling issues, earlier iMacs polled at around 125 or so, unlike most PC's where you could adjust polling without issues, if you set polling on a mouse too high on the iMac's it caused huge lag in certain games.
Mac vs PC when it comes to polling rates in games can be much different.
On my iMac I notice that I have to reduce the polling rate on my Death Adder for instance to below 500 where as playing the same game on the Windows machine it's running at 1000.
If you're using a gaming mouse, high polling rates can 'flood' if you move the mouse as you're trying to click at the same time, this has been an issue for Mac's for some time depending on the mouse and game.
If you're not using a gaming mouse then you'll probably just have to wait it out as they might not have that part of the 'network code' tweaked yet. One possible issue. Could also be same if you're using a Bluetooth mouse.
When I play PCEA on my Dell with a Death Adder I have the polling set low so that I'm not 'grabbing' the instant I click the button, helps a lot with hitting very close to the ding (which helps with putting for sure).
The suggestion of buying a new mouse might be what you may at some point need to do, but hopefully that's fixed as the Mac version moves along.