As an old iPad user (iPad 2,3,Air2 and iPad Pro 9,7) i was hopping that 4gbs of 10.5 will finally solve this irritaating problem. I can’t believe it’s ram related but more of an iOS ram management app issue. I have only opened 4tabs and they refreshed.....it doesn’t happen so often like in previous iPads and I notice it happens when I have tabs opened with videos. SO F you Apple.