There are a couple of tweeks in the BIOS that might help. I got these from support:
Make sure those three are disabled. I think the C-States on did the most for me.
Also, limiting the number of cores used by Cubase can help. See this article, but support showed me a registry edit which is the better way of doing it. Ask them as I am not sure how they worked out the number.
Finally, there is a problem with Dropbox, of all things. One of the dropbox DLLs can cause issues. Just turn off dropbox sync while working, if you have it.
None of this is a perfect solution, but it may get you out of the mud!