On 7 December 2017 at 17:37, Chris Green cl@isbd.net wrote:
I went through lots of things. As I said Safe Mode made no difference at all. I also tried disabling Flash and that made no difference either. Searching for other people with the same issue produces *lots* of hits! However one fix I found does work for me.
I simply opened a 'Private Browsing' window in Firefox and using that window eBay doesn't cause the CPU usage to go to 100% (or more).
Was one of the things you tried deleting cookies? If not then give that a try. Private Browsing would avoid sending any previously stored cookies back to eBay so it's plausible that a dodgy cookie is causing this.