I am having a very similar problem. When I start DW it freezes for several seconds, the loading screen turns black. It flash back and forth a few times. When it finally does open within 1 to 2 minutes of just sitting there DW crashes.
I have already reinstalled DW, reinstalled the CC Desktop app, I ran the cleaner program to remove all traces of adobe CC, nothing has worked.
Another post suggested uninstalling DW, restarting the CC Desktop app and then reinstalling. I tried that, I got DW uninstalled but now the CC Desktop app won't open. I double click the shortcut, the cursor shows wait for a few seconds and then nothing!
When I check task manager, Creative Cloud.exe is using 12.5% cpu which is 100% of 1 core
I am using Windows 8.1 Pro 64bit, Core i7 with 16GB of Ram.
Right now it is impossible for me to develop any of the several websites that I maintain. This needs to be fix now!