u missed the sync in the main loop and maybe u forgot to turn autocam back on
try this bud
Rem Project: Darkhaven
Rem Created: 21-1-03 15:50:59
Rem ***** Main Source File *****
Rem ***** Initial Set-Up *****
Set Display Mode 800,600,16
Sync On
Sync Rate 0
Hide Mouse
AutoCam Off
Color Backdrop 0
rem make a temp internal image to test your snippet
ink rgb(255,255,0),1
box 0,0,32,32
ink rgb(255,0,0),1
box 4,4,28,28
get image 1,0,0,32,32
Rem ***** Image Loading *****
`load image "basphlt.jpg",1
Rem ***** Matrix Creation *****
make matrix 1,1000,1000,25,25
prepare matrix texture 1,1,1,1
update matrix 1
Rem ***** Camera Set-Up *****
make camera 1
set current camera 1
position camera 500,25,0
Autocam on
Rem ***** Main Loop *****
do
control camera using arrowkeys 1,5,5
sync
loop