Just out of the blue, there's apparently a buggy Nvidia game driver. It's caused a number of different crash or hang/freeze issues with the 14.8 public version. If going to Mercury Acceleration setting and changing the GPU to "software only" fixes the issue, it's GPU related.
If Nvidia GPU is in use, go to their driver support page, download and do a clean install of the Studio driver. If the latest version doesn't work, roll back one Studio driver version. This has fixed things for a number of 14.8 users.