2017-04-18 3:03 GMT+02:00 Quiliro <quiliro@riseup.net>:

IceCat hangs when entering web pages such as instructables.com. I
supposed it was because it has a lot of Javascript. Nevertheless, the
problem occurs even when these plugins are activated:
Disconnect
GNU LibreJS
SpyBlock
uBlock Origin

There's a workaround for Icecat hangs. You have to set the skia rendering

Something like

gfx.canvas.azure.backends = skia
gfx.content.azure.backends = skia

This has been discussed in the past, see here
https://lists.nongnu.org/archive/html/guix-devel/2017-02/msg00972.html

There are more mentions of skia, just search the mailing list archive