I have a relatively fast machine (2.0GHz up to 2.8GHz AMD Quad-Core A10-4655M APU), running Xubuntu 15.10 (x64). Whenever I try to open large PDF files (>40MB), Evince takes quite a lot of time to render the pages (>4s). I tried other PDF viewers (e.g. Master PDF Editor), with more or less the same results.
Opening the very same PDF takes significantly less time in an old Windows 7 machine (Intel Core 2 DUO @ 2.93 GHz, 4GB RAM, no external GPU).
Is there something in the PDF rendering engine or engines (Poppler?) that makes opening and rendering PDF files considerably slower in Ubuntu than in Windows? Any ideas on how to reduce rendering time?