uBlock Origin and NoScript should reduce the memory load. Another help is FBPurity.com which is a web browser plug-in that lets you customize your Facebook fee

uBlock Origin and NoScript should reduce the memory load. Another help is FBPurity.com which is a web browser plug-in that lets you customize your Facebook feed. I have mine set to not show things other people "Like" or "Comment" on. This way I only see things my friends actually post of their own.