I know I was vague, but we really are CPU-bound. We do some fairly heavy set and bitwise operations. Our smallest unit of work is about 3x-5x slower on AWS (whi

I know I was vague, but we really are CPU-bound. We do some fairly heavy set and bitwise operations. Our smallest unit of work is about 3x-5x slower on AWS (while costing about 4x more than alternatives). This can't be further parallelized without a rewrite. The problem is compounded by the negative impact this has on concurrency - which can be solved by adding more machines, but that just makes AWS that much more expensive. A different, less important system, does image manipulation. This is also very CPU-sensitive.