It's hard to tell for sure. Double-buffering game updates like that can involve a lot of memory copying. Considering that it would not surprise me in the least if Factorio was close to being bottlenecked by memory bandwidth, this could easily be counterproductive.
Factorio is sensitive to memory latency, not memory throughout. This matches expectation of a single threaded application with many data dependencies. Ripe for multithreading where data independencies can be made.
