[generationP]

Browsers are painfully slow at rendering PDF. Open them with your local reader.

[thrdbndndn]

Really? I found Chrome being much faster than Adobe Acrobat.

Either way, the speed of rendering never bothered me.

[generationP]

SumatraPDF on Windows is lightning fast with the kind of PDFs you get from the arXiv (true PDFs without heavy graphics). I don't know what is fast on Linux, but probably some MuPDF-based viewers are (the MuPDF PoC viewer is fast even on WSL).

[btdmaster]

zathura is superfast on Linux, can handle thousands of pages, and may be used under either MuPDF or poppler.

[djbusby]

Evince FTW!