thank you jcl , and sorry I meant ent_setvertex , well I guess it makes sense to have 1 frame of update time needed , I then only need to find a way to apply hightmaps faster because I am stepping 1 pixel at a time which obviously takes ages from 1 vertex to the next with a frame wait of 1 in real time per step , anyone have any advice on how to step directly to each vertex in distance vs the step amount on the heightmap image in pixels ?

jb