Why is my high-end computer performing badly

[Wazza_1]

Operating System
Windows 10 Home 64-bit
CPU
AMD FX-8320 47 °C
Vishera 32nm Technology
RAM
12.0GB Dual-Channel DDR3 @ 665MHz (9-9-9-25)
Motherboard
ASRock 970 Pro3 R2.0 (CPUSocket) 29 °C
Graphics
S240HL (1920x1080@60Hz)
NVIDIA GeForce GTX 980 (MSI) 45 °C
Storage
1863GB Western Digital WDC WD20EZRX-00D8PB0 (SATA)



These are the specs listed. I get 60fps when launching the game or doing nothing intensive but as soon as something like a gun fight breaks out or an explosion happens the fps drops to about 30 or lower.

Any ideas why? I took my PC to the shop and they fitted a gold power supply claiming it would make everything run better but it hasn't given any improvements.

I have done the obvious like cleaning and updating drivers.

 

[RCFProd]

The AMD FX-8320 is relatively towards low-end, it is far from high-end. Not even close. Your graphics card is a bit above mid-end, certainly a good performer at 1080p however. GOLD tells nothing about the power supply. The performance of the power supply, the build quality is all irrelevant to that matter. The +80 certification is arguably the least important thing about a power supply.

Now the mandatory set of questions:

1) Since when are the performance issues occuring? Was it always that way, or did it start happening recently?

2) Do the performance issues occur in every game you play?

3) Have you updated your graphics drivers? Have you tried removing your graphics card drivers with DDU, and done a fresh install to the latest Nvidia drivers?

4) Is your Operating System a fresh install, or did you update/upgrade it from an older Windows installation?

5) Have you monitored GPU and CPU usage when playing games, using the overlay in MSI Afterburner? (Riva statistics).

6) Have you monitored your GPU and CPU's clock speeds when playing games? MSI Afterburner? (Riva statistics).

7) Have you monitored the temperatures of your GPU and CPU when playing games? MSI Afterburner? (Riva statistics).