[Closed] Trouble with render script

I need a simple script render animation in 8 directions (for a game). I have a Dummy with linked Lights. Just rotate dummy at 45’ and render. Output filenames must be like this “animation1_X_YYYY” when X is direction, YYYY is frame number.
It’s work, but have a problems. Please, help me !

1 – Increasing memory consumption. When I start, MAX use ~ 200 MB RAM. After 3 starts on script MAX use already 500MB !!! I’m not sure if rendered pictutes stay all in memory ???
2 – Somethimes (I’m not observe at what kind of scenes) it work veeery slowly (about 3-4 times slower if render manualy in MAX. And crashes (?!!) with “Unknow Exception”

– fl = filename mask
– frFrom = begin frame
– frEnd = End frame
– frNth = every Nth frame
– have 2 sliders for Height & Width of immage (h & w)
– this is the render part on script

on btnRender pressed do
(

for i in 0 to 7 do
(
bcol.text =(“Column: ” + i as string)

for fr in frFrom.value to frTo.value by frNth.value do
(
if fr < 100 then
bm = bitmap w.value h.value filename:(fl + “” + i as string + “” + “00” + fr as string + “.tga”)
else
bm = bitmap w.value h.value filename:(fl + “” + i as string + “” + “0” + fr as string + “.tga”)
bfr.text = (“Frame: ” + fr as string)
render camera:cam frame:fr to:bm vfb:off
save bm
close bm
)
rotate dum 45 z_axis
)
messagebox “Done!” beep:on
)– end btnRender

Do you see the reason of my troubles ???

PS. I attach a whole script