My CPF

(CNY)My CPF=100% CPU-why?

Descriptive little ■■■■■■, aren’t you?
(:TNG)

Completely uninstall the version you have now (All files, registry entries, everything.)
Download the old version 3.6:
http://www.filehippo.com/download/file/e9d9cf5f6a2575e491a088942962379ec5bf2418a884b99cea8bed7ad950a1a5/
Install that old version. Is it normal CPU now?

It’s a known issue with the current version. Sometimes it happens, sometimes it doesn’t - it seems to be completely random behavior.