I have to ask it, why? ... and to answer the question, execution will automatically switch to the AVX exe when the cpu supports it because it's more performant. Deleting the AVX exe will prevent that happening
More performance? I thought it would deliver greater quality, and that the normal would come with greater performance.
pretty much any kind of modern cpu does support AVX instructions and therefore the performance is better as this features are better utilised. If the CPU wouldn't support AVX, the AVX game either wouldn't work, crash or be very slow.
Without getting too deep into it these types of instruction sets allow performing the same instruction on multiple values in one instruction instead of having to do them one by one. Depending on the version of AVX used that can be anything from 4 in parallel to 16 which can be quite a a lot of saving when you are doing a lot of it every frame. Any additional quality to be achieved would come from being able to spend that time on other things or not being CPU limited so theGPU doesn't get held back. Some of the middleware in use in the engine benefits from improved performance with AVX. If AVX is not available older SIMD instruction sets will be used instead subject to cpu supprt (SSE)
