If you're low on disk space and don't mind giving up Windows, just install Linux and have it overwrite the windows install. Most sub/projects are as fast or faster under Linux, with only few exceptions, Gerasim being one. I did dual boots initially because I was nervous about using a new operating system, but Linux Mint is very familiar. My other concern was my AMD GPUs, I could never get them to run under Linux...still the case BTW. Fortunately I've moved to 100% NV and installing gpus is no longer a problem, though Opencl takes an extra step or two with the latest NV drivers. At this point all but 2 or my machines are either dual boot or Linux only and only because of work or financial software requiring Windows 10. All of my crunching machines run Linux almost 100% of the time and I'm pretty happy.