Can you tell me how RTA and IGT count?

ok no.

sorry thats an actual meme with the letter h from an smo discord server ehm xd RTA time is basicaly the whole time that passes if you start a timer from the first frame of movement to the frame you enter the portal of the end finishing the game IGT is basicaly that without loads, the time that passes while you are in game to get it in the way you have to pause and unpause the timer for each load while you are playing anyways you dont need, you always can time the IGT out of the game in the video of the good attempt