@burnout426 I dont know what sites use high ram. I dont use operas ad blocker but I use an external one. I usually only have 3 tabs open at a time though.

Well, I'd be happy to swap issues with you, because I DO have the "delay loading of background tabs" selected, but they all load, which is NOT what I want at all, as it slows down opening & closing Opera, and runs up my RAM & CPU Usage big time! Maybe the key is to select the opposite of what we want in the preferences, maybe if I not select it, the background tabs won't open, and vice versa. But it is quite odd that we are both experiencing Opera not doing what we've selected, really odd...