A bit off-topic, but i wonder whether you'll get better performance if you run Bitcoin Core (Linux ARM 64-bit version) on WSL. After all, WSL already support using ARM-version of the supported Linux distro.
I figure when the next generation of ARM stuff for Windows arrives I will pick up one of the current gen as a leftover and play with it a bit. Although by then someone else probably would have done it and posted about it.
If it's a simple cross compile it's surprising that nobody has done it yet. If it's a bit more involved, I can see it not happening until there is a larger demand.
-Dave