I am cleaning up my computer with Disk Cleanup.
I am using Premiere Pro & AE CS6.
I see that Temporary Files was rather large and I was afraid to delete them. The total Temporary Files was 164 GBs. WOW. Therefore, I was concerned that I might delete something important so I left it.
However, I thought maybe that represented the Preview Files that have been left behind over an extended period of time and it would be OK to delete those right? I was just NOT certain so I left it.
BTW, my Windows Experience Index rating of my computer is now 6.1 (up from 4.1)
What does anyone think? Would it be OK to delete such a vast amount of Temporary Files with Disk Cleanup? 
TY Gene