Yes, but if you turn off inheritance perf goes up 10x. It's a policy, not the NTFS driver itself.

Can you provide links providing more info for those statements?

no, just try it out.

all my cygwin build rules contained turning off inherited perms to be able to compile bigger systems under an hour. e g. https://github.com/rurban/cygwin-rurban/blob/master/release/...