That's right, I have as well a AMD RYZEN 3 3200G and I have no issues.
Today I found another interesting issue with my AMD Ryzen 5 3600 computer: at some point in time the bluetooth mouse has lag, randomly for even less than a second. The system load is very low. It happens randomly, when I do lots of clicks.
Tried with another bluetooth mouse for couple of hours, same issue. It also occurs at the same time when the game has troubles with the speed, so I guess that it's a Windows system issue. Will try with a cable mouse later on.
As for AMD Ryzen 5 3600 cooling, I use the default one.