I like safety in my backups. So I regularly do both a System image with
Win10's Win7-style app, and then a Macrium Reflect one.

I did two today; Win10 took almost 2 hours, Macrium took 19mins.

1TB spinning HD, C partition occupies it all, apart from a few small
ones for reset etc. Which means that Macrium had even more to write.

Why is this? Why does Windows take so long? It's not doing anything more
than Macrium, and, in addition, it comes from MS themselves, the
creators of this system, the supposed connoisseurs.

Ed