Sorry to say but this problem is very old and adobe cannot, or will not fix it. They have even stopped responding to post about it. There were a couple of work a rounds, using Chrome, a few others depending on your system type. One was on AMD processors changing the chip to use only one core helped with the freeze a bit, but after this last release June 10, 2014 that no longer works. Looks like a software bug introduced a couple of releases back that they cannot find, or just do not know how to fix. With newer devices (mobiles, thinkpads, so on) looks like they have written off flash player for desktops, bad move from a customer service stand point.
Just so you know don't expect to many replies on this, most of us have given up on adobe finding a solution.