Currently the "Time" column is basically the RTA, Real Time Attack, measured from the character reset till the finish of War Path, that includes all time spent in the post-race window, menus and loading screens. And that's how it should be.
However, what's currently called as "IGT" is actually not "In-Game Time", as that is usually referred to as time spent in the game (racing, playing and menuing), but without the load times. In RC Cars the times under the IGT are not actually IGT, but something like "sum of race times", shown by the game on the ending screen, rounded to a full second. This "Race Time" also shouldnt be called IGT, as playing the game in RC Cars actually involves also gaining cash after finishing the race and waiting a few seconds to gain extra $, but that waiting time doesn't add to the "Race Time" (but should add to a proper IGT, like it adds to RTA).
My suggestion is:
– Change the name of "Time" column name to "RTA"
– Change the name of current "IGT" column name to something more fitting what it represents, maybe "Race Time" or "Total Race Time" or whatever it might be that would be understandable for everybody what the numbers in that column are, which is the sum of time from 10 races rounded up to a full second
– For the future: Different machines load the game at different speeds. The difference can come to as much as 5s per track load, where one player loads tracks in 2 seconds, and another in 6 or 7 seconds. That can add up to 40, 50, 60 seconds of difference in the RTA from the load difference alone. Perhaps adding a real IGT (RTA minus load times) would be at some point necessary to level the competitive field and remove the load times from the equation, measuring them manually and substracting from the total RTA. It's time consuming, but right now there are not many runs anyway, the problem will only get bigger the more runs there will be in the future.