Random network issue

To give some context, I have a desktop computer that, for the past few weeks, has been experiencing network problems at certain times during the day (often every 30 minutes, but sometimes not for 3 to 5 hours). The connection to any type of network is lost for 1 to 2 minutes (including both the router and mobile tethering).

I’ve tried quite a few things, but it doesn’t seem to be enough.
First, I tested with two network cards purchased for this purpose: one Wi-Fi and one Ethernet. Previously, I was connected directly via the motherboard.
I also tried fixing the issue by resetting my operating system and assigning a static IP address.

  • Motherboard: PRIME Z590-A
  • Processor: i7-11700K
  • Operating System: Windows 11 Home, 24H2
  • Wi-Fi Dongle: TP-Link AC 1300
  • Network Card: TP-Link PCIe 2.5 Gigabit TX201