Lyx 1.4cvs qt usually have nice performance over a 2Mb/s adsl link. (X tunneled via ssh.)
The display update much faster than I can type - except if I insert an xfig external inset and checks "show in lyx". I then get a nice image of the fig file, and performance drop to a level where I can type much faster than the display updates. This is strange and probably unnecessary. I understand that transferring an image over the adsl link will be slow, so I accept that any action that move the xfig-image on screen could be "somewhat boring". But I was typing into another paragraph lower in the window, so the graphich didn't move at all. All that changes was a single line of text, there ought to be little X traffic and nice performance in this case. But it was awful - is graphichs repainted on every keystroke? Helge Hafting