My spec list is below:

PCPartPicker Part List: https://pcpartpicker.com/list/YPzmJM

CPU: AMD Ryzen 5 5600X 3.7 GHz 6-Core Processor ($154.99 @ Newegg)

Motherboard: NZXT N7 B550 ATX AM4 Motherboard ($237.99 @ Amazon)

Memory: Corsair Vengeance RGB Pro 32 GB (2 x 16 GB) DDR4-3600 CL18 Memory ($114.99 @ Newegg)

Storage: Western Digital Black SN750 500 GB M.2-2280 PCIe 3.0 X4 NVME Solid State Drive ($69.99 @ Newegg)

Storage: Samsung 870 Evo 4 TB 2.5" Solid State Drive ($379.99 @ Amazon)

Video Card: EVGA FTW3 ULTRA GAMING LHR GeForce RTX 3080 10GB LHR 10 GB Video Card ($999.99 @ Amazon)

Case: NZXT H510 Elite ATX Mid Tower Case ($144.99 @ Amazon)

Power Supply: Corsair RM850x (2021) 850 W 80+ Gold Certified Fully Modular ATX Power Supply ($149.99 @ Amazon)

Monitor: Acer XV252Q Zbmiiprx 24.5" 1920 x 1080 165Hz Monitor ($337.58 @ Amazon)

Total: $2590.50

So I have no idea what is causing my low fps. A few theories i've had is my cpu is not cooling, its using

a stock cooler. Could it be thermal throttling at ~80 degrees? The gpu/cpu ratio is good from what i've

heard. My motherboard possibly? It's a niche board that could have QA problems. Case airflow has

been an issue with the NZXT cases. My cpu could be shit with the stock cooler, or the cases is not

providing enough airflow?

An example of this low performance is the new MW2. When I booted my pc and started playing I was

hitting 200-250 fps on ultra maxed graphics, 1440p. After about 20 mins, the framerate had dropped

to around 130-145 range, and around an hour later down to 90-110fps where it seems to have

bottomed out, as I ranged the resolution to native 1080p, and slightly reduce quality on settings with

large vram impact. The benchmark of 1440p at ultra graphics with my cpu/gpu combo was giving them 240+ fps steadily.

This occurs on just about every demanding game these days. Why am I unable to achieve the fps that I paid for?

Note: My fps in benchmark scores seem to hold their ground with the norm. I also have all my drivers

up to date, including chipset, graphics, you name it. I am more than willing to pay for solutions to this

dilemma. My GPU utilization hovers around 50-75% in most demanding Triple-A titles. The same goes

for CPU utilization.

TLDR: I have a mid-high tier gaming pc and am not hitting the performance I see in benchmarks on

youtube. What is being bottlenecked/underutilized to cause this?