So after a few runs have been submitted and I have seen a few runs from different versions, I have reached the conclusion that IGT is completely inaccurate.

Looking specifically at the Football Cup runs done by ComradeMidas and Doopster made this apparent. ComradeMidas begins the race ~0:33 into the video and ends the first race ~2:56 into the video, meaning his IGT should be around a 2:23. Instead, they have a 1:55.288. Now look at Doopsters run. Their first race begins ~0:32 into the video and ends ~2:48 into the video, meaning their IGT should be around a 2:16 (or around 7 seconds faster than ComradeMidas). Instead, their IGT is a 2:10.528

At first, I thought this was a version difference between PAL, NTSC, and whatever version our Russian runners are using (It may also be PAL, I'm unsure sadly). However, look at the current WR run for all cups done by Genia. Their first race begins at ~10 seconds into the video and ends at ~1:53 into the video, making their theoretical IGT around a 1:43. Their IGT actually is a 1:43.348, meaning their IGT is almost certainly 100% accurate!

At this point, all I can say is I am confused by this games IGT. If anyone has ideas as to how all of this can be explained, please let me know. I'm sure it has at least some explanation regarding frames per second, since afaik games in Europe (and I presume Russia?) run in 50 FPS as opposed to 60 FPS like the USA.

Anyways, to solve all this, main timing has been switched from IGT to RTA to make things consistent (hopefully).