I have the full download from steam is there any reason people are running this with scum for speed puposes???

the steam version is the directors cut, there is an own site for it here: https://www.speedrun.com/broken_sword_shadow_of_the_templars__the_directors_cut

the dlc with the original version uses scumm too

where are you getting the OG scum version of the game from?

https://store.steampowered.com/app/580430/Broken_Sword_1_Original_Version/?curator_clanid=3953527

Thanks @gT