Halo Reach Maxing My CPU

Hello all,

I have purchased Halo Reach on PC through Microsoft Store, after installing and logging in with my Microsoft account the game is fine, however, when I join any game mode the CPU jumps to 100%. This makes the game unplayable. I have nothing else running in the background. I have tried to find anything online but I am at a loss. The specs will be down below. Any help will be greatly appreciated.

GeForce RTX 2070 (Drivers are up to date)
Intel(R) Core™ i5-6600K CPU @ 3.50GHz
16 GB RAM
1680 x 1050, 60Hz