I've attempted to crash s8 today at CPW, or at least try to slow it down by opening every single app on the system and almost 60 browser tabs with at least 10 4k video loading on some pages and 4k hdr youtube clip playing. Didn't seem to affect it at, still showed 800mb ram left and 0 slowdowns, switching randomly between pages and apps was as swift as I could move my fingers.
I know nougat is probably closing things down on its own when not in used but nevertheless, my note4 would have exploded if I tried doing the same, so looks like a worthy uparade.
And oh god HDR vids look sweet on it, as good as my 4k 10 bit HDR samsung telly.