I have my own issues with anything above 13.1. I've lost the ability to run some apps and xbox games anytime I've upgraded. (Troubleshooting the problem while using anything above 13.1 tells me I need to update my video drivers....go figure. I've just finally found the answer and will be upgrading back to 13.12 to test the solution.) Now, when I was running 13.9 and 13.12, I did notice a significant improvement in the apps and games that would work. I never had Boinc running while I was running the 13.9 or 13.12. Keep us up to date with what you find with the beta drivers.