Wow didn't realize Win10 had that sort of shenanigans going on. Doesn't seem to affect newer processors but it's almost as if they prefer users of Sandy Bridge stay on Win7.
Actually, what they'd really prefer is for you upgrade to a newer CPU. That's to be expected. Supporting older architectures means design tradeoffs. They need to either:
A) Avoid using newer instruction set extensions (holding back performance on newer processors);
B) Provide multiple code paths to optimize performance for newer processors, while still retaining backward compatibility (bloats and complicates the code and makes testing/validation more difficult);
C) Drop support for older architectures.