Why uis this Editor buidling a CACHE Index all the time?

It is causing serious freezing and slowdown problems within in the editor, causing the editor to freeze up for 10-15 minutes before it finishes building
the whole cache index to try to index every new item in the cache. I WANT THIS CACHING INDEXING ACTIVITY TO STOP. so i can beable to use
the editor without waiting for ages for it to build the index.

I have only 16 gigs of ram.