I've finished retiming all the Practice course runs with new rule Now Timed with RTA + first frame time of IGT timer First frame where timer appears over hotbar Last when when message saying complete appears (hotbar or chat since same)

Why?

• Most runners have a tiny amount of lag through their run and adding the first IGT time (often just +0.05 to all runs) brought it much closer to the in-game time they had.
• Story Mode runs, the timer actually doesn't appear right away, so that fixes that issue (mine was +0.7 sec for example)
• any% glitched is still just IGT since when I looked at retiming, it boiled down to what framerate and quadium time they started the recording on.
• The IGT timer on Consoles devices actually staggers badly to the point where the timer is actually seconds off.

On a side note: Flashgiant must have the hardware specs of the game developers since every one of his runs matched perfectly to the frame outputting the in-game time as the actual RTA time as well.