Hi all,

I managed to improve my Cygwin VM's performance significantly using a
variety of methods.

If anyone else is experiencing troubles, seeing what I changed at
https://www.hamishmb.com/blog/improving-cygwins-performance-fork/ might
also help you. Not using VirtualBox was the main improvement for me (now
using KVM/QEMU). Note that I didn't achieve much difference, but that
was because my system is relatively powerful. What isn't shown is that
these changes do seem to help with the fork speed drop-off that occurs
over time.

Hamish