@Yatsuki It's a Fire HD 10 so not high power. I've only had problems with long images, never with page elements. Given that images display just fine outside of the browser I don't think it's an issue with lack of processing power or memory.
Some long strip manhuas/web comics are uploaded in too large of chunks for mobile browsers to render properly (sometimes the whole chapter is one huge image) and it ends up looking like pixelated garbage. None of the mobile browsers I've tried have worked with these long images.
The only way...