[KayL]

Wait, is it true? Did you encounter a bug? or browser extensions issues? It may not be as efficient as native, but I downloaded some sample files and repeated them until hit Google Docs limits. It is about 450 pages with some images. It is smooth and usable. There's zero delay. (and only 1000MB ram usage with many broswer extensions enabled. I think it's fair...)

[constantcrying]

Who knows how exactly that word looks. Might be Features from word which it is badly emulating.

[rumad]

The doc file has images, and some simple tables but mostly texts.