Do you have one that we can use to check future builds of IE against?

Here's one:

https://github.com/D-Programming-Language/dmd/pull/4381/file...

It's not even that big, and it's nearly impossible to scroll it.

Try this: https://github.com/golang/go/commit/b986f3e3b54499e63903405c...

To be fair, it's extraordinarily slow even in Chrome, but IE11 rendering on this page is pretty bad.

Impressive to see the difference between browsers there, though. IE is unusable with ~420 MiB of memory for that tab. Chrome is unusable as long as the page loads; after that only slowed down slightly, with ~540 MiB of memory for that tab. Firefox is snappy, fast and takes only 180 MiB of memory for that tab.