I have deleted all temp files in my DCCache folder after reading this thread. Thank you Crin.
I own the entire store minus about 10 outfits along with all worlds, EP's and SP's. Currently my DCCache file is 6.28 GB and my Download folder contains 7.43 GB full of goodies. Before I deleted the temp files my DCCache file was at 11.8 GB - whoa!
I have very little 3rd party content, 96.6 MB to be exact. Just a few mods and some patterns.
I start my game using the TS3W.exe shortcut as I don't have a TS3.exe. Not much lag time when loading the game but when I enter CAS I can take a nap while it loads and several cat naps while I wait for the outfit/items I choose to appear on my Sim.