Salmon,
That's exactly what I was expecting for my SSD. But for some reason I keep running out of space. The system was notifying me of low space every other day. Believe me when I say I have tried just about everything. In fact, other than the apps Windows 10 came with, and Twitch (280 Mb) I am only keeping a few apps that are not larger than 75 Mb in C (SSD). All the other larger apps (Gimp, Blender, LibreOffice, Astroneer, Dying Light, L4D2.) I keep them in the HD drive. Of course, all media (videos, music, and photos) are all in the HD drive too (and backed up in an external HD). I already did the Disk Cleanup in the Properties window too. Oh, And I have checked that box for compressing the C drive (which instead of shrinking grew like 2 Gbs actually).
I just managed to find more apps to move out, so I'll be ok for sometime. But if C continues running out of space I'll have no choice but to move it to the HD drive.