I bought this pack and on my iMac (2011) and Macbook Air (2013) Pinball Dreams and Pinball Mania where slow. In Pinball Mania there was also a delay in the music.

This slowness has something to do with the 'cycles=auto' in the 'DOSBox Preferences.conf'. At this moment the best solution looks like just deleting that line, other values bring other problems like graphical glitches.

To find this file, right click and show package contents, go to contents, recourses and right click and show package contents of Pinball Gold Pack.boxer. Then you can edit the file with your texteditor of choice.

Hope it helps!

Thank you!