Flash is freezing my browser

There's not much detail here, so I can't provide a lot of useful advice beyond the fact that we're not seeing an uptick in installation failures from the Mac community. 

Flash Player is deployed to about 2 billion machines on a monthly basis, and a consistent failure in even a small percentage of that population results in overwhelming volumes of complaints.  That is not happening, nor are we seeing it in the aggregate telemetry data.

It's far more common to see problems that stem from subtle filesystem or permission corruption on Mac.

I'd recommend starting at validating the fact that your filesytem is in a good state:

See the "Try Disk Utility" section:

https://support.apple.com/en-us/HT203176

While you're there, choose Repair Filesystem Permissions (Verify will frequently return clean, but then Repair will still fix a bunch of problems).

Once you've repaired and latent problems there, run our uninstaller, just to make sure we're starting at a good baseline:

Uninstall Flash Player - Windows:

https://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html

Then download a pristine copy of the installer here, and give it another shot:

http://get.adobe.com/flashplayer/

If that doesn't work, the installation logs should tell us why the installer is failing on your machine.  If the problem *is* a bug in our installers, those details will allow us to identify and resolve the issue.  Details on collecting and sharing the logs are in our installation troubleshooting guide below:

https://helpx.adobe.com/flash-player/kb/installation-problems-flash-player-mac.html

After you've collected and posted the logs for the failing installation (we don't want to obscure the failure data), please check outthe links to the offline installers at the bottom of the guide.  They should get you going.