AMD Ryzen 7 2700X Overclock (OC) in League of Legends (LoL) - Lower Performance

I've noticed, with my Ryzen 7 2700X overclocked manually, League of Legends performance is worse. It actually drops below 60fps at times.

Stock clock settings on the other hand work well and rarely drop below 100fps.

Anyone know of this?
 
No, max CPU temp was 54C. All cores stay at 4,190.9MHz all the time. The Division 2 Beta plays fine. It's just LoL that performs worse. This is not the first time I've experienced this with LoL and my Ryzen CPU when OC'd, it's anytime I OC manually it lowers performance in LoL. I usually run stock clocks because I mostly play LoL, but was playing The Division 2 so I OC'd again.