Normal
I hate to tell you this since I know it is not easy to change, but your AIO fan is set to exhaust, not intake.The way it is set in this picture, it is taking hot air from the inside of the case (mainly the gpu), heating it even more through the radiator. and then exhausting it out of the case. For radiator to work well you want as high as possible delta T in air temp, if you take air that is already hot radiator won't work at its peak efficiency.
I hate to tell you this since I know it is not easy to change, but your AIO fan is set to exhaust, not intake.
The way it is set in this picture, it is taking hot air from the inside of the case (mainly the gpu), heating it even more through the radiator. and then exhausting it out of the case.
For radiator to work well you want as high as possible delta T in air temp, if you take air that is already hot radiator won't work at its peak efficiency.