@Greg OLone It will definitely act differently. Direct2D is hardware accelerated in your video card and emulated video cards in VMs will definitely give you slower results.
That said, @Julian S, did you have any plugins installed when doing this key repeat test?
I tested in a office with various pc: desktops, laptops..., different configurations, all updated, well not all, a senior programmer prefers win7, Win10. when I open the project (1500+ files they works mostly in that project$$) when typing shows a delay, I have a VM with win10, same behavior with new blank project, do not upgrade xojo now, was the general opinion.