Question Computer Crashes Only When Playing Games

[Validus1297]

I purchased a pre-built gaming PC from Best Buy on on August 15, 2019 (approximately 4 months ago).
-------- My Build --------
Operating System:
Windows 10 Home 64-Bit
CPU:
AMD Ryzen 3 2300x
14nm technology
RAM:
8GB Single-Channel DDR4 @ 1199MHz (16-16-16-39)
Motherboard:
MSI ASRock A320M-HDV R4.0 (AM4)
Graphics:
2048MB ATI AMD Radeon RX 560 Series (XFX Pine Group)
Storage:
476GB SanDisk SDSSDH3512G (SATA (SSD))
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-------- My issue --------
My computer crashes when I play video games on it, not immediately, but after anywhere between 10 and 40 minutes into playing the game, the whole screen turns a certain solid color (I've seen tan, I've seen bluish purple, maybe a couple more), sometimes I'll hear no noise, sometimes I will hear a buzzing sound followed by silence. The computer stays powered on, but basically stops sending any signal of display to the monitor.
I monitor my computer pretty closely with Ryzen Master and also the Radeon Overlay Software. All the temperatures, speeds, voltage, etc. seems to be very normal. When I play games, however, I do notice the clock speed of my GPU seems to be very spiky, jumping from 100% to 0% very sporadically and quickly. If I'm not running any games, I will see a much more flat 0 clock-speed for my GPU and only tiny spikes here and there up to 50%.
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---- What I've Tried ----

1. Updating the UEFI BIOS to version 2.3 using the Instant Flash Tool and instructions from the ASRock Support Page for my specific motherboard/CPU (all later versions were not recommended for my CPU)
2. Doing a clean install of Windows 10 OS with data erasure (writing all 0's to the drive) using Windows 10 recovery feature. Scanned for rootkits afterward to ensure there was no malware hiding anywhere.
3. Doing another clean install of Windows 10 OS from a freshly created boot USB drive created on a very secure PC.
4. Uninstalling and reinstalling the latest graphics drivers using the following process:
   1. Downloading the latest drivers for my graphics card from the AMD website.
   2. Disconnecting the computer from internet, booting into Safe Mode.
   3. Uninstalling all display drivers using DDU, installing the the previously downloaded drivers from step (a).
5. Playing and testing different non-graphic intensive games on lowest graphic setting possible. (WoW Classic, League of Legends, etc.)
6. To ensure overheating is not the issue, I Switched out the stock CPU Cooler for the CoolerMaster Hyper 212 Black Edition and Downloaded multiple temperature monitoring programs (Core Temp, HWMonitor, Ryzen Master) to ensure the computer is not overheating.

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-------- Question --------
After everything I've tried, the problem still persists. Could it be possible that I just have a bad graphics card? Is there anything I haven't tried before just replacing the graphics card?
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[rgd1101]

make and model of the psu?