Depends on your system. A few years ago I ran it on a MacBook where scrolling on an empty page took ages. Seems nobody tried it out on a Mac before releasing the port since it was totally unusable. Hopefully it's fixed now, but I wouldn't recommend a piece of software I don't trust to anyone.

Last time I tried (admittedly two years ago), it was incredibly sluggish, several times more so than MS Office, which is also sluggish in general.