Question 3700x - poor stock performance

Out of ideas. I'm well versed in PC's. Been building since I was 6 years old (I'm 30 now).
I bought a 3700x for the purpose of running it at stock, but the performance is noticeably worse than all of the reviews on it.
+3560 Cinebench All core R20 score (reviews are in the 4800 range)
+About 30% hit in gaming at 1440p and 4K. If I OC to 4.2 @ 1.3v, it brings it up to expected levels. At 1440p, stock CPU is getting me 44fps in AC (ultimate settings). If I OC, I'm getting 58.
+Set Windows Power to Ryzen High Performance
+Played with Ryzen Master - Default settings.
+RAM is DDR4 3600 CL16
+Mobo is an Asus TUF x570 PLUS
+All driver and BIOS updates applied
+Reset the mobo to optimized settings, which set everything to automatic (stock)
+No thermal limitations. I'm using a 360EX liquid cooler. Max temps at stock are 57c. OC'ed are 70c.

I'm okay with going with my 4.2(1.3v) OC if need be, but I can't get over why my stock performance is so low.

Any ideas are welcomed.
 
What single and /or all-core clock speeds are sustained/noted during CInebench R20, or, in Prime95/small FFTs/all AVX-off?

Power/TDP restraints removed in BIOS?

Was this a fresh WIndows 10 install of latest version of WIn10? (1903, OS Build 18362.239?)

(Do all 8 cores/16 threads show in task manager/performance?)
 
Was this a new Windows install?
Yep, fresh install of Win 10 1903
What single and /or all-core clock speeds are sustained/noted during CInebench R20, or, in Prime95/small FFTs/all AVX-off?

Power/TDP restraints removed in BIOS?

Was this a fresh WIndows 10 install of latest version of WIn10? (1903, OS Build 18362.239?)

(Do all 8 cores/16 threads show in task manager/performance?)
Fresh install of 1903.
CPU was reaching 4.3 during process, which I guess is normal. The 4.4 is something that rarely occurs, or so I've heard.
Unsure about the power/TDP restraints. I don't recall seeing anything like that in this Asus BIOS.
Yes, all cores and threads show.