Definitely slower than something that has a pre-defined stylesheet, e.g. Stylus. Does occassionally cause graphical issues (say, below 0.05% of websites I visi

Definitely slower than something that has a pre-defined stylesheet, e.g. Stylus. Does occassionally cause graphical issues (say, below 0.05% of websites I visit, once a month?) that means I have to toggle it off for that site. Still use it because the speed / memory different isn't noticeable on most modern laptops / desktops. Even my phone uses it now as it's quick enough with the 'dynamic' update they made (toggle onto it under the 'more' section)