Why are two of my cores underclocked?

FalloutSeeker

Reputable
Dec 27, 2014
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Ever since I installed a new graphics card, I've been having terrible performance issues. (stuttering, etc.) Checking CPU-Z, this is what I get:

AMD 5800K CPU

CPU #0-#1: 3,792.31MHZ x38
CPU #2-#3: 1397.17MHZ x15
Uncore: 1496.97 MHZ

I tried unparking the cores, but my pc says they are already unparked. Is something damaged?