Safari seems to be gradually developing more and more issues for me over the last year and I can't figure out why. About 1/2 the sites I visit anymore (including MacRumors) won't load and instead I get a "Connection is Not Private" warning. Any video other than youtube won't play (i.e. Vimeo loads and looks like just the text in Times font with no video or page structure, no news website will play video). Some websites only load the headers, then the body just stops loading at the background color. I'm running at 13" Retina MBP, 2013, with High Sierra. I've tried clearing history, cookies, resetting Safari settings, etc., no luck. Any ideas? Thanks.