Hi, I don't know if I should share this here since it involves cheating but I have also done this before and it would be fairly obvious to spot in a run. I recommend ""SoloBeast v1.1"-MW3 SP Trainer 1.9.461" on MPGH. UnKnoWnCheaTs is also a good forum for what you seek.
Be careful about VAC bans though. In theory these cheats are undetected but I only ever used them on a throwaway Steam account as a cautionary measure. Maybe they work on a cracked version of the game as well.
Obviously disable them during real runs and have fun !
The autosplitter is simply a tool to relieve the runner of having to manually split, the final time is determined by hands from the footage and the loads in it.
Probably Xbox Series X because it's the hardware on which you play that matters. A mod will tell you soon enough
Open LiveSplit, go to Edit Layout, then Layout Settings and check Always on Top. You also need to play MW2 on anything but Full Screen mode, so use Windowed. I hope this helps
I'm just checking the comment system, don't mind me (I'll never beat that omg)