Well, I did as you and MaximeT said and relies on the temperatures from now on.
So I don't mind that 36 psi is higher than the 32-34 that random-Australian-Yokohama-guy recommends.
The car felt a whole lot better than the previous time where I ran 1.9 Bar cold pressure. I think I got lucky with the 2.05 Bar. It seems to be in the ballpark to keep the tire temperature even. The front left overheats a bit on the outside so I'll increase my camber from -2.5 to -2.8 and see what happens.
About swerving to heat up the tires, I read that it's not a good idea to do with absolutely cold tires since the sidewalls can flex. It's better to heat them up initially with braking. When you see professional drivers do it keep in mind they probably had warming blankets on the tires before starting to drive. There is lots of high-speed braking on the GP circuit, and combined with the cornering I would suspect they are up to temperature after 1 lap. Also keep in mind the swerving you see is during formation laps, the drivers try to
keep the temperatures because they are driving slow.
If I started out with 2.4 Bar, I would probably end up with 2.8. That neither good for the handling nor for tire wear.