Quite simply, TikTok is using (and paying for) A LOT of traffic. That allows them to cache the first X seconds of the next Y videos. If you choose the values co

Quite simply, TikTok is using (and paying for) A LOT of traffic. That allows them to cache the first X seconds of the next Y videos. If you choose the values correctly, it takes you longer to swipe up Y times than it takes them to cache the Y+1 th video, on average. I'm sure if Reddit had government-level funding to burn, they'd also find some ways to improve their video player.