Maintaining 50% RH indoors during a midwestern summer is good in my opinion.
I’ve got hygrometers running in both the house and detached pool room and they are steady 50% RH with AC set around 72/73F.
On the flipside winter gets considerably dry, and I actually need a humidifier in the pool room to keep the RH above 30%.
Ultimately, a 20% swing in humidity between summer/winter isn’t enough to negatively affect my level of play. It boils down to personal comfort.