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My friend has an older Scarlett, 1st Gen and Focusrite hasn't provided any updated drivers since 2014. Samplitude gave him a lot of grief until he switched to the Magix drivers. This seems to be a common problem with Focusrite stuff. Glad you solved the issue.
Not sure if this is correct. The last Windows driver in my Focusrite account in 2016. It is version 2.1.4. For those on a Mac they have just updated the Mac driver.
I am also not impressed with a program that requires you to ditch the actual Focusrite drivers that they provide and use another driver instead. How do you know you are getting the best performance from the Magix drivers. In fact no other DAW from what I can see makes you install a different driver. Studio One allows you to install the manufacturers driver which is the way it should be.
For example if you are running the Clarett interface over thunderbolt you have to use their driver in order to get that great performance.
Focusrite Control also provides all that signal routing and stuff. What happens to all that?