Font rendering quite CPU expensive in GEM (Jerome Tuncer)
Its also down to what typeface you are using. The more complex the
curve, the higher the polygon count. Straight edge/polygon faces such
as Gridnik (http://www.foundrytypes.co.uk/foundry_gridnik/
gridnik.html) or Citizen (http://www.myfonts.com/fonts/emigre/citizen/
familytree.html) tend to speed things up. These are not gratis if you
are not so fussy, but there are plenty of free ones (http://www.
1001freefonts.com/). Simple pixel based fonts also speed up, but they
look shit in 3d. Stay away from the serif - unless you do like cyrill
suggest - and go for texture mapping. Helps turning off antialiasing
too.
T.