Hi! For IGT, we start on the frame the lights turn green, and end on the frame the minimap disappears when crossing the line on lap 3. The mods will retime each full game submission regardless, though PC runners can use the autosplitter for a rough estimate.
I myself am a fan of IGT, mostly because RTA would encourage deliberately losing the cup to skip both the rival defeated and podium cutscenes, instead of trying to finish each race as fast as possible (which is the whole point of a speedrun imo).
Yeah I believe that's what it means, though the buff is very brief.
For some tracks like Colourful Mall I think it's more optimal to try to build up to 100 rings as fast as possible.
Sometimes since it can depend on the meta for certain tracks but in most cases it makes more sense to run something else like QC Lvl 3 if you're also running Drift Kit. I'd especially say this is true if you're running a similar build in a full game speedrun.
Hi!
So an important thing to note about "Kit" gadgets is that they come with the abilities of regular gadgets as well as a small modifier to stats, so an example would be Drift Charge Kit coming with Quick Charge Level 1 + 2 (but not Level 3) along with +3 to your Handling stat.
The instance of the run you're referring to is using Speed Machine Kit and Boost Character Kit and it's similar to what I'm describing. Here's what those gadget kits come with:
Speed Machine Kit has Mini Ring Boost and Ring Range Up with a modifier of +20 to Speed and -16 to Accel when using a Speed Vehicle (which this run is doing so the modifier is applied).
Boost Character Kit has Air Trick Expert and Air Trick Bounty with a modifier of +7 to Boost and -5 to Power when playing as a Boost Character (modifiers not applied in this case but the main Air Trick gadget effects still apply).
For extra reference of the ins and outs of gadgets in the game, here's a link to a google doc you might find useful:
https://docs.google.com/spreadsheets/d/1_B2mHZUP6J6jeZfcwbM2HkLvjkwMYuACE4l6Ktt-UkI/edit?gid=0#gid=0
Hope this helps!

Scotland

