Freezing when I mouse hover over models

[havenphillip]

The whole computer locks up when I mouse hover over models. Had to restart several times. Also on the downloads page when I click a pic no option for downloads is appearing. It may work a few times but then stops showing up. Also, not sure if related but lights are not lighting up textures in scene, as if they're not working. I'm on an Acer vega 6, if that's important. Saw some other folks on AMD having issues. Any help appreciated. 5 looks awesome I wanna mess with it. Thanks.