Playing online multiplayer, I was seeing "waiting for players" anywhere from 4 seconds to 20 seconds.

How should this be compensated for in timing? IGT seems like an easy solution, but isn't currently being used for other runs.

Is the waiting for players occurring during character select? We just decided to change the timing to start on character control, so if that might answer your question.

The only problem with IGT right now is it doesn't display total time at the end. It's still being considered as a possible option.

nah it pops up in-between levels on occasion

It's the little networking turtle in the bottom left. The time is pretty variable, to the point that it's as impactful as bad boss RNG