Ah, I stand corrected, thank you for explaining @Joey79100. In the video below, the UVrotate value is changed to 4, in vanilla it's 8.
I've made the change to mizuno_suisei's script file. These are the changes in full for both Script and English DAT files:
-SEPARATE, the correct spelling (mizuno_suisei)
-Added Golden Skull text value to, Race to the Iris (mizuno_suisei)
-Flat waterfall animation slowed down, Angkor Wat (ATombRaiderFan)
Update: Removed download link because the modified DAT files prevented Fmv03 from playing.
Update 2: Separate thread created