Question GPU clocking down

Nov 2, 2019
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Its all fun and games until my GPU starts to clock down from ~1400 mhz to ~500 mhz while playing - resulting in massive stutters for about 1/2 to 1 second. (My CPU is not even close to 100% usage) So my guess so far is that my psu (500W) is too low. Im not sure tho.

MSI B450 Gaming Plus Max
AMD Ryzen 5 3600
RX Vega 56 8 GB ASRock
16 GB Corsair 3200 Mhz RAM
Samsung 970 EVO 1 TB
be quiet! Pure Power 11 500W
3 Fans (Including the Ryzen stock cooler)