Question 100% CPU Usage When Playing Games

Nov 4, 2019
I recently built this computer and have found out that my CPU is hitting 100% usage when playing games and I can't figure out why. I've found that other people have this problem and they say that their frame rate spikes but my computer doesn't have any issues keeping a steady frame rate. It runs Modern Warfare at 150-200 frames at low settings consistently but when my computer tries to load certain maps in the game it just turns off than back on automatically it doesn't blue screen or give any error codes. I should also mention that the temperature of my CPU when playing games ranges from 50-60 degrees Celsius so I don't think it's a cooling problem. My computer sometimes turns off right after the legend select screen in Apex Legends goes away as well. It isn't very consistent sometimes it turns off when loading Apex or Modern Warfare maps and other times it gets through the loading screen it' really just a coin toss. It turns off when I play most games except for League of Legends and Gmod. I would appreciate any advice on how to fix it. Thanks for your time.

CPU: Intel Core i7-9700K 3.6 GHz 8-Core Processor (It's currently running at 3.6 GHz)
CPU Cooler:
Corsair H100i RGB PLATINUM 75 CFM Liquid CPU Cooler
Motherboard: MSI MPG Z390 GAMING PRO CARBON ATX LGA1151 Motherboard
RAM: Corsair Vengeance RGB Pro 16 GB (2 x 8 GB) DDR4-3200 Memory
HDD: Western Digital Caviar Blue 1 TB 3.5" 7200RPM Internal Hard Drive
SSD: Samsung 860 Evo 500 GB 2.5" Solid State Drive (All my games and OS are currently on the SSD)
Video Card:
Asus GeForce GTX 1070 Ti 8 GB TURBO Video Card (Drivers are updated)
Corsair Obsidian 500D RGB SE ATX Mid Tower Case
Power Supply: Corsair CXM 750 W 80+ Bronze Certified Semi-modular ATX Power Supply

OS: Windows 10 64-bit