how do you alter the ingame delay? can't find it
Pretty sure you just hit "D". Then select from 1-9 or something (9 being the longest delay). Unfortunately you must do this every time you launch the game, but it will remember your choice until you quit.
This command is listed in the manual as well, which for this game is well worth reading as it also gives all the spell numbers which you will need when casting. If you haven't checked it out yet, it should be in PDF format in your game directory, and you can also download it separately from the "additional content" menu after clicking on the MM pack on your GOG account page.