30-50 fps when bootcamping/ 5-15 fps on mac. Consider that I am playing on a mid 2012 Macbook with 8gb ram, I will soon put 8 gb ram more and I expect to have an increased performance when bootcamping. The 64-bit mac client is just broken :). Wow, ok. I'm running the mac client on a Mac pro with 64 GB of RAM, a crazy fast internal ssd, 12 cores... I get 30fps in 4k (it's capped at 30 even if you select otherwise) but it dips into the 15 fps for no reason every 5-10 seconds, as if it's a coding issue (for example when a fire animation resets). I realized that a bunch of things that shouldn't affect performance do, like the dpi interface scaling and not having the fps set to unlimited. Even when I lower the settings it's still capped at 30fps and drops at random moments that have nothing to do with the activity on screen. I guess the mac client needs a lot of performance improvements.