On my home network I've been tearing my hair out over network/router connection reliability over last few months. Desktop is running Windows 8.1
Noticed tonight Canon EOS Utility using 15% of CPU at rest!
A quick dig around web shows lots of threads like this saying 2.14.0 version from 2014 is poison:
http://www.canonrumors.com/forum/ind...?topic=20597.0
Have updated to 2.14.1 tonight, and fingers crossed things play happier.
Posting in case anyone else has this Canon Malware installed