Performance Suggestion: Replace GIFs with videos in grid view

[samhenrigold]

While I was browsing this GIF-heavy channel, I noticed the page takes quite a while to load in new content and, when you scroll a good amount down the page, it starts slowing down as it loads more content. Take a look at how GIF playback suffers compared to the original:

arena_chrome_stuttering.mp4

The performance hit is especially noticeable when hovering over blocks...

arena_chrome_hover_lag.mp4

...and it's especially bad on mobile:

arena-scroll.MP4

I was reminded of this web.dev post about videos being more performant than GIFs, I thought I'd bring this up since it doesn't seem to have been raised before.