FPS gradually lowers for no apparent reason.

[saiegg]

Hey everyone! I'm quite new to PC gaming. It's only been a few months since I've gotten my brand new PC. It'd been running great! Until yesterday that is..
I got on to play some DOOM (2016). I got into the game. Keep in mind, before this I had the game running at pretty decent graphic settings and a 75 FPS lock. I played for about 1 minute and then all of a sudden, my FPS dipped. All the way to 30. Weird, maybe its rendering something. However, my FPS kept gradually lowering. Eventually, I dipped to 9 FPS and then just stayed there. I made sure I had no programs running. I thought maybe I needed to restart my PC. I did just that and boom. Still sunk to 9 FPS after 1 minute of playing. I tried running other games and to my surprise, all my games had this issue. They start off like normal at great framerates and then it gradually sinks to 9 FPS and stays there. Some people said it's malware, so I ran some Malwarebytes tests, and nothing. Dust? None in the PC at all. Overheating? Not at all. I was wondering if anyone could help me out with this. I'm quite worried, especially since this came out of the blue.
 

[Guest]

Some Graphics cards will start off with a high boost. As they warm up, the boost clocks start lowering to maintain a good temp. Perhaps that's what your issue is possibly.

 

By the way. What are the system specs??

[Snowarch]

assuming its an nvidia card, if its amd please ignore the green with envy part.

 

use afterburner and change your fancurve, or if on linux, mangohud + green with envy to check for downclocking, and in driver settings make sure its set to maximum performance. could be a powersaving thing. try taskmanager to make sure no igpu is being swapped to as well. 9fps consistant sounds like an igpu. i am kinda taking a shot in the dark here so if youre using something like a threadripper that lacks an igpu, sorry. 

 

[saiegg]

34 minutes ago, ShrimpBrime said:

Some Graphics cards will start off with a high boost. As they warm up, the boost clocks start lowering to maintain a good temp. Perhaps that's what your issue is possibly.

 

By the way. What are the system specs??

CPU: Intel Core i5-9400 CPU @ 2.90GHz

GPU: GeForce GTX 1650

RAM: 8.00GB Single-Channel Unknown @ 1329MHz

[saiegg]

29 minutes ago, Snowarch said:

assuming its an nvidia card, if its amd please ignore the green with envy part.

 

use afterburner and change your fancurve, or if on linux, mangohud + green with envy to check for downclocking, and in driver settings make sure its set to maximum performance. could be a powersaving thing. try taskmanager to make sure no igpu is being swapped to as well. 9fps consistant sounds like an igpu. i am kinda taking a shot in the dark here so if youre using something like a threadripper that lacks an igpu, sorry. 

 

Gonna try that. Thanks!