[lucideer]

Site works with no lag on my low end android. Someone else commented on issues on iPhone6 so possibly a Safari-specific bottleneck being hit.

[yxlx]

Hello, Firefox on Android user here on a tablet from circa 2012. Extreme lag, unlike most websites.

There are definitely unacceptable performance issues with the syntax highlighter javascript.

It looks great, it's a cool project, but it is not suitable for use anywhere.

[STRML]

Looks like the `overflow:auto` on the page container div, not actually anything to do with the library.