dark spot on cpu ihs

View: https://imgur.com/a/SCsjERT CPU: Ryzen 5 3600 Cooler: Cryorig M9 Plus MOBO: Asus B450-F Gaming II Thermal paste used then: Cryorig CP15 (Maybe Expired) (Under the 3600 writing is where the mark is) 2 weeks after upgrading i was seeing abnormal-ish temps (Abnormal-ish Temps 55-60...