Question My PC tends to lag in games after 20 mins of playing

[BabyTonight]

Hello,i recently started to have a problem that's ruining my gaming experience.After 15-20 mins of playing any game on my pc it tends to lag the game then after 30 sec it starts being normal but then again after 5 mins it starts again and again.I'll be happy with any kind of help!
And here are my PC specs:
Gpu-Rtx 3060 12GB
Cpu-Ryzen 5 4500
Motherboard-b550m
Ram-16gb ddr4 3200mhz
Here's a video with the lag persisting (sorry if its posted on GD)

 

[Roland Of Gilead]

Hey there,

Looks like the CPU is crapping out, and hence the lagging. ONce the CPU clocks drop (to 400mhz) the GPU FPS tank immediately.

Are all your system drivers up to date? Including chipset? Have you used DDU to uninstall your GPU driver, and then reinstall?

What bios are you running on your mobo?

Is your ram running in XMP mode?

 

[punkncat]

Are you monitoring temperatures?

How full is your storage drive?

What type of power supply?

My bet is there is some temperature issue going on causing throttling. Are you cleaning this PC regularly of dust?

 

[BabyTonight]

Are you monitoring temperatures?

How full is your storage drive?

What type of power supply?

My bet is there is some temperature issue going on causing throttling. Are you cleaning this PC regularly of dust?

My temperatures for my GPU and Cpu after 20 mins are
For GPU-60 °C
For CPU-65 °C
I have a 1TB HDD it has 402gb free
And a 238 gb SSD that has 110gb free
Power Supply is gp-850
And i clean my pc i think once every three months.

 

[BabyTonight]

Hey there,

Looks like the CPU is crapping out, and hence the lagging. ONce the CPU clocks drop (to 400mhz) the GPU FPS tank immediately.

Are all your system drivers up to date? Including chipset? Have you used DDU to uninstall your GPU driver, and then reinstall?

What bios are you running on your mobo?

Is your ram running in XMP mode?

All of them are up to date and including the chipset.Yes i have used DDU to uninstall my Gpu drivers and reinstall
The last bios i am running for my mobo B55DS819
Yes it is running in XMP mode

 

[punkncat]

Do you have a lot of things running on startup and/or in the background?

 

[BabyTonight]

Do you have a lot of things running on startup and/or in the background?

I close all apps running in the background