Blender cycles AMD worse after new update

After the blender update that added support for AMD GPUs in cycles my AMD GPU actually causes blender to crash more often. Before I had launched an older version of blender with CYCLES_OPENCL_TEST=true as an environment variable, and blender worked fine, however now it crashes whenever I attempt a GPU accelerated render. Anyone else have similar trouble?

GPU is r9-280x
OS: Win7
Graphics drivers are up to date.