When running Firefox with multi-process and Webroot Webshield enabled, I am experiencing problems whereby CPU spikes although not to 100%. The PC becomes very sluggish including mouse movements. If I can get windows Taskmanager to respond, I can resolve the issue by ending Firefox otherwise a reboot is necessary. It seems to relate to a conflict between scripts and Webshield. Has anyone else experienced this?
Firefox V52.5 ESR
Webroot 126.96.36.199 - fresh re-install tried.