> Sometimes you may want to use SSE41 even with AVX2 is available. I'm glad this is an option. I feel like a lot of libraries assume you always want the widest

> Sometimes you may want to use SSE41 even with AVX2 is available. I'm glad this is an option. I feel like a lot of libraries assume you always want the widest SIMD width possible, when this is very likely to cause performance issues for many cases.