Games (Specifically CS:GO) Not getting expected FPS

[KykyRocks1]

Hello! I've been having this problem for a while now. I've just dealt with it, but I'm sure it's not right. I get 110 FPS on average in CS:GO (Fluctuating between 75-150) with everything on low, multicore rendering enabled, with -high -threads 6 in the startup commands thing in steam. I haven't tested much on other games, but from what I remember, the FPS in other games had gotten worse too. I have had this computer for almost exactly a year now, and it used to get really good FPS.

Specs: 

PCPartPicker part list / Price breakdown by merchant

CPU: AMD FX-6300 3.5GHz 6-Core Processor  ($98.89 @ OutletPC) 
CPU Cooler: Cooler Master Hyper TX3 54.8 CFM Sleeve Bearing CPU Cooler  ($18.78 @ OutletPC) 
Motherboard: ASRock 970 Pro3 R2.0 ATX AM3+ Motherboard  ($74.99 @ SuperBiiz) 
Memory: G.Skill Sniper Gaming Series 16GB (2 x 8GB) DDR3-1600 Memory  ($64.99 @ Newegg) 
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive  ($87.89 @ OutletPC) 
Storage: Western Digital Caviar Blue 500GB 3.5" 7200RPM Internal Hard Drive  ($49.89 @ OutletPC) 
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive  ($45.89 @ OutletPC) 
Storage: Western Digital BLACK SERIES 1TB 3.5" 7200RPM Internal Hard Drive  ($73.89 @ OutletPC) 
Video Card: MSI Radeon R9 280 3GB TWIN FROZR Video Card  ($199.99) 
Case: Deepcool TESSERACT WH ATX Mid Tower Case  ($39.98 @ Newegg) 
Power Supply: Corsair RM 1000W 80+ Gold Certified Fully-Modular ATX Power Supply  ($143.99 @ Amazon) 
Monitor: Asus VG248QE 144Hz 24.0" Monitor  ($250.32 @ Amazon) 
Monitor: Upstar 22-inch HDMI VGA 1080P P220YM Screen LED ($99.99)

Mouse: Razer DeathAdder Chroma Wired Optical Mouse  ($60.99 @ Best Buy) 

 

I have overclocked my FX-6300 to 4.2 GHz and my R9 280 to 995MHz. I have also tested with both on stock clocks. BIOS is updated to latest (P2.60 from 02/01/2016)

I have already tried reinstalling graphics card drivers and completely reinstalling (Went from Windows 10 64-bit to Windows 8.1 64-bit) to no avail. Temps are fine, but CPU runs a little hotter (33ish idle, likes to hover around 45-50 in CS:GO). Any help is appreciated!

[KettyKoala]

Have you checked to see if your CPU is bottlenecking? 

[Thoaee1993]

CSGO is CPU heavy as far i know. so yeah. might be your CPU ? no tech nerd sadly (yet)

[PlayStation 2]

Sounds about right if you're at stock.

[KykyRocks1]

9 minutes ago, Dan Castellaneta said:

Sounds about right if you're at stock.

I'm not at stock... I tested with stock before, but I'm usually overclocked to 4.2 GHz

[KykyRocks1]

15 minutes ago, KettyKoala said:

Have you checked to see if your CPU is bottlenecking? 

During CS:GO, my CPU and GPU usage both never go higher than 75%

[KettyKoala]

1 minute ago, KykyRocks1 said:

During CS:GO, my CPU and GPU usage both never go higher than 75%

Have you tried to play without the command? I doubt CS:GO uses 6 cores

[KykyRocks1]

Just now, KettyKoala said:

Have you tried to play without the command? I doubt CS:GO uses 6 cores

Yes, I have tried using many different configurations of the command and removing it altogether