CCS/CC2640R2F: Is CCS keyboard lag a sign of a corrupted workspace?

Part Number:CC2640R2F

Tool/software: Code Composer Studio

I've found that pretty often (several times per hour), while I am paging through code, CCS 8 will freeze up for a second or two, and then resume.    If I look at it in Win 10 task manager during the lag, it is taking a full load of one of my CPU cores.     I'm pretty new to CCS so I can't say if this is expected behavior for CCS.   Apart from these incidents, CCS is pretty responsive.

I noticed in the CCS tips & tricks, it is noted that workspaces can get corrupted, and to rebuild them occasionally.   Is this one of the signs I need to rebuild the workspace?

Any other ideas - if it is not the workspace?