(HP71B) Speed experience with Video (EMU71 and Video80 screen)

[floppy]

I was making some words which execution is large on EMU71 (no complain; i expect it represent the reality).

DRAW-FRAME takes 1min37s in a standard speed EMU71 (with Video80 from C. GIESSELINK connected to it)

: XDIM 50 ;
: YDIM 20 ;
: AT-XY 27 EMIT 37 EMIT SWAP EMIT EMIT ;
: DRAW-FRAME 0 0 AT-XY XDIM 0 2DUP = IF 2DROP ELSE DO ." +" LOOP
THEN YDIM 0 2DUP = IF 2DROP ELSE DO XDIM I AT-XY ." +" CR ." +"
LOOP THEN XDIM 0 2DUP = IF 2DROP ELSE DO ." +" LOOP THEN CR ;

Has anybody a video interface and a screen to see if its a similar speed? or worse?
My impression is: HP71B is for outputting things on a screen; not for representing dynamic/changing pictures.