Your Corsair AIO should be strong enough to prevent a Ryzen Processor rated at 105 Watts TDP to keep it from reaching its Maximum Operating Temperature at 90c.
My opinion is either you have poor air circulation inside your PC or you need to add a second Fan to your Corsair AIO if it doesn't have one, or your Corsair AIO is not installed correctly or is malfunctioning.
To check air circulation inside your PC remove the side panel and see if the CPU temperature is slight lower than when you have the side panel on. If it is, that would indicate poor air circulation inside your PC.
Make sure nothing is obstructing your Radiator Fan/Fans air flow and clean all your PC Air filters and case fans.
If you only have one AIO Fan purchase another High Volume Fan (CFM) and attach it to your Radiator to help cool your CPU better. See if the temperatures are much lower and doesn't go above 85c under heavy loads.
If you do have 2 fans installed then I would check that the AIO is correctly installed and the pump is working and you can feel liquid circulating at the radiator and the Radiator positioned is installed in position where it isn't receiving hot air from inside the PC case.
The Input hose to the Radiator should be slightly hotter than the output hose from the Radiator.
