Strange. The Windows folder does get larger over time, but with a fresh install it should be around 8GB.
The Windows folder gets larger over time primarily due to the winsxs folder. Currently mine is 6.68GB
Why not use something like FolderSizes to find where the problem is?
Ozz was right, it's less do with the ssd, and more to do with my 24gb of system memory.
When I went to check the hidden files and folders and I found these files:
hiberfil.sys - 17.9gb
pagefile.sys - 23.9gb
The hiberfil.sys file has to do with hibernation, and I'm not sure why it's so big, but I'm going to get rid of it.
The pagefile.sys handles virtual memory and the size is usually about 1.5 times the size of the installed memory, which would account for the size. I am wondering if I could or should change the size of it.
Performance Options> Advanced>Virtual Memory> Select No Paging File> Set. (You can also set the page file size but with 24GB of RAM I'd just turn it off).