Windows 10: Browsers and desktop applications lagging and freezing while GPU is close to 100%

For a little while I have the problem that while in an application mostly games that brings my GPU to around 100% usage normally 97+ the rest of the applications and even Windows itself starts to lag.This mostly applies to the browser, especially videos but not the sound. But also applications like Discord become unresponsive again apart from the sound and voice chat itself and I have noticed even things like the Windows clock in the taskbar start to lag and freeze up.The application that cause this keeps on running fine. In games for instance I reach 90 to 144 fps without a problem, b

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CSRSS Using 100% GPU Freezing PC

Over the past couple of weeks I have been experiencing either severe lagging or complete freezing of my pc. In task manager the culprit seems to be Client Server Runtime Process (gpu 0 - 3d), which is located in the Windows 32 folder as CSRSS, using upto 100% of the gpu. This seems to happen randomly, even when the pc is idle. When I use the mouse wheel for scrolling on a website, then the Client Server Runtime process immediately uses the gpu at between 30% and 40%. I turned of hardware acceleration in Firefox, but this doesn't seem to have made a difference. Anyway, the pc will sometimes freeze without a browser open. I am also sometimes get 100% CPU from System Interrupts. During this time there have been updates from Windows and Nvidia (GeForce GTX950). Windows 10, version 21H1 (OS build 19043.1237)

 

Significant CPU, GPU and RAM lag spikes

My computer is having significant lag spikes. How do I make my computer's CPU, GPU and RAM go down? Any tips or suggestions? Also I use this computer for gaming. 100% gpu usage! 6.5gb ram usage! 65% cpu usage! Disk does fine, though. Windows 10, 21H2

 

B(lack)SOD after closing GPU demanding applications and games

I would like to suggest 2 more things if you don't mind,
1. Seat the GPU in another slot, if possible, and see if that helps anything
2. Use the GPU in another system, if possible, this is a step to determine that it is really the GPU and not multiple defective slots or something else from the system.