Buderus GB172 Boiler & RC300 Controller: Room Temperature Settings for Warm Radiators & Floors

Hello. I have a question regarding room temperature settings. I have a Gb172 boiler and RC300 controller.
Current settings: from 7:00 to 18:46 lowering 18 degrees. From 18:45 to 7:00 heating 22.5 degrees. On the stove the temperature is set to 45 degrees.
The problem is that in the morning the controller shows a temperature of 22.5 or more, and upstairs, the radiators in the rooms are cold and the floor heating in the bathroom, and the room thermometer shows a temperature lower by up to 2 degrees. Feels cold and very much. At the bottom of the floor heating is also cold.
The controller is mounted on the wall in front of the boiler room.
Please let me know how to set the heating so that the warm radiators and the floor heating are warm for a long time, is it possible?

1. Does the boiler operate with a heating curve or manually?
2. Is there sometimes no heater or other heat source installed under the RC300?
3. Heating is split between two clutch circuits or all at once?
4. Unfortunately, based heating and one controller will never be as comfortable as we would like because this controller is only in one place. It is worth considering increasing the temperature on the RC300 and making the rest of the adjustments with thermostatic heads.
5. Alternatively, if I remember correctly somewhere in the RC300's settings there is an option to correct the room temperature, it can set this 2K difference which is between the RC300 and the thermometer.

1. Works with curve.
2. Probably not. I will ask the installer about it.
3. As above.
4. I've thought about it. I will try this solution if the option below does not help.
5. I found this option. At the beginning I corrected by -1.5K. I'll let you know how it turned out.
Thanks for the answer.

It is better, but it is even better to set a higher temperature on the controller and adjust the heads.

So the driver is in the wrong place.

Probably the temperature on the controller is a bit high. The controller is in the lounge at the entrance from the corridor.
Now it is like this:
On the controller, the heating temperature is set to 21 and in the settings corrected by -1.5. When I want to heat the bathroom for the time of bathing children, I set it on the controller 22 and it is ok. The heat in the bathroom and the radiators are twisted to 2 or 3 and that's enough.
I have one more question. When the boiler is turned on, it quickly gets warm in the rooms and in the bathroom, while the floor heating downstairs does not heat up or you can barely feel it.
There is also a floor heating in the bathroom upstairs.
The floor heating is controlled by a Wilo pump. It is set to I. The temperature of the floor heating is set to 25 degrees
My question. How long does it take to feel the warmth downstairs.
I know it's spring, but I just moved in and I'm testing the heating.
And when I set the temperature to 30 degrees (floor heating), the valve vibrates terribly