Modern sim racers often rely on third-party apps like Sidekick, RaceEssentials, or MoTeC for live data. So, why revert to a static spreadsheet? Because writing things down manually reinforces memory.
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If you are racing in a team event or a "Driver Swap" league, host your spreadsheet on Google Sheets. Share the link with your teammate. While you are driving the first stint, your co-driver can be on a tablet trackside adjusting the setup spreadsheet for your second stint based on changing track temperatures. They can even use the "Chat" function to send you messages via the in-game app overlay (using AC's UDP specs). assetto corsa spreadsheet