In my latest run, I noticed that the in-game time for my save files throughout the run were about 2 minutes slower than the real time; as it turns out, IGT tracks time on the menu, in addition to time spent actually playing the game. It does this when stalling on the screen at the end of a run, too; any time spent just sitting on the end screen is added to real time. This might be a solved issue already, since mardek 3 doesn't use IGT, but the leaderboards here default to IGT for their rankings. I'm not sure how to accurately find the in-game time for my run, so I've just put it in with the difference between IGT and real time from my last completed run for now.