Another day without speedo, got one penalty as speeded at pits, jumped to accelerator bit too soon, same time got bit surprised how close at limit I was doing without speedo, used LX6 there.
Only grief is lack of fuel indicator, but I guess I'm bit too used to look that, it is rather simple to calculate laps I can do, still I fail
I recommend everyone to try, turn all instruments off, no speed no tacho, there is hardly any difference at all, imo.
Now situations where I know I miss my speedo needle are new setup and new track, feeling of speed lacks quite a bit when playing with TFT and angle of needle could help there to tell if I'm close to what I think I'm doing, but that is only for first lap or two until no need any more.
Had few spins and burner rubber quite a lot, when spinning make sure you shift down if you keep throttle floored as auto clutch engages surprisingly early when you are going backwards and spinning tires at 3rd gear, that is reason why your clutch smokes.