Question 5 GHz keeps throttling after 30 minutes

[4ScoreSlappy]

Just built a new desktop, my motherboard is a X870E AORUS ELITE WIFI7. I updated bios and had to manually install Realtek wifi drivers via usb. I connect to my wifi fine, but after roughly 30 minutes the speed will consistently drop from 200mbs down to 1mbps. It always works fine if I immediately disconnect and reconnect, it will just drop again later. I've tried reinstalling the drivers but haven't come up with anything as to why this is happening.

https://imgur.com/a/VLb9tq0

Edit - Here are my specs:
Motherboard - X870E AORUS ELITE WIFI7
Processor - AMD Ryzen 7 9800X3D
Memory - 64GB .SKILL Trident Z5 Neo
Storage - 4TB Samsung 990 EVO Plus SSD M.2
Power Supply - Corsair RM1000X
OS - Microsoft Windows 11 Home x64

 

[Ralston18]

Update your post to include full system hardware specs and OS information.

Are you using a USB wireless network adapter? If so, what make and model?

You posted "and had to manually install Realtek wifi drivers via usb". Not sure about the meaning....

For the most part, I suspect that the wireless adapter may be getting hot and then slows as a result.

Especially if a dongle connected to a back USB port. I used USB extension cables to move wireless USB network adapters up and away from the back USB ports. Helped with cooling as well as transmitting and reception.

Use Task Manager and Resource Monitor to observe system performance. Look for what changed/changes when the speed drops.

Another thing you can do is to check Reliability History/Monitor and Event Viewer. Either one or both tools may be capturing some related error codes, warnings, or even informational events preceding the slowdowns.

That 30 minute time frame (if consistent) may be a clue. Check Task Scheduler for anything being triggered at the 30 minute mark.

Could be some app trying to update, backup, or simply phone home.

 

[4ScoreSlappy]

Update your post to include full system hardware specs and OS information.

Are you using a USB wireless network adapter? If so, what make and model?

You posted "and had to manually install Realtek wifi drivers via usb". Not sure about the meaning....

For the most part, I suspect that the wireless adapter may be getting hot and then slows as a result.

Especially if a dongle connected to a back USB port. I used USB extension cables to move wireless USB network adapters up and away from the back USB ports. Helped with cooling as well as transmitting and reception.

Use Task Manager and Resource Monitor to observe system performance. Look for what changed/changes when the speed drops.

Another thing you can do is to check Reliability History/Monitor and Event Viewer. Either one or both tools may be capturing some related error codes, warnings, or even informational events preceding the slowdowns.

That 30 minute time frame (if consistent) may be a clue. Check Task Scheduler for anything being triggered at the 30 minute mark.

Could be some app trying to update, backup, or simply phone home.

The built in wifi for the X870E AORUS ELITE WIFI7 comes with an extension dongle, I have moved it to many different places and it doesn't seem to make much of a difference for temperature.

In terms of manually installing realtek drivers I mean that I had to move the files from another PC to this one via flash drive, because I am unable to connect it directly to the router with an Ethernet cable.

The 30 minute time frame isn't completely consistent but I took a look at Reliability History and Monitor and Event Viewer, there are 4 successful windows updates that occurred just as my speed test throttled right now.

The updates are:
9WZDNCRD29V9-MICROSOFT.MICROSOFTOFFICEHUB
9NSTH9KHZDLQ-Microsoft.UI.Xaml.2.8
9N0DX20HK701-Microsoft.WindowsTerminal
Security Intelligence Update for Microsoft Defender Antivirus - KB2267602 (Version 1.421.1725.0) - Current Channel (Broad)