Question Pc becomes unusable during downloads

[Applejack357]

Whenever I download a game of any size on Origin or Steam client, my pc becomes very laggy and practically unusable during browsing and other basic applications. I have a 1tb m.2 ssd with plenty of storage available on it so I don't believe it has anything to do with a slow drive. Task manager shows that all my GPU and CPU usages are below 50%, so I don't understand where all the lagging is coming from during downloads.
My specs are:
Radeon 5700XT
AMD Ryzen 7 3700x
MSI b450 Tomahawk MAX

 

[Koekieezz]

Whenever I download a game of any size on Origin or Steam client, my pc becomes very laggy and practically unusable during browsing and other basic applications. I have a 1tb m.2 ssd with plenty of storage available on it so I don't believe it has anything to do with a slow drive. Task manager shows that all my GPU and CPU usages are below 50%, so I don't understand where all the lagging is coming from during downloads.
My specs are:
Radeon 5700XT
AMD Ryzen 7 3700x
MSI b450 Tomahawk MAX

follow this step by step in order (read till end):

• Disconnect from internet
• Uninstall every gpu driver using DDU (clean and do not restart, also tick all option in AMD option in the ddu settings).
• Uninstall all the processors (is a must, should be 16 on yours since it's 16 threads, also when it asks for restart, click on no and keep uninstalling all processors) on device manager like this:
  
  
  
  
  
• Uninstall AMD Chipset Software in control panel (if there is none, skip it.)
  
  
• reboot the PC to bios, disable AMD fTPM and secure boot (if enabled by default), save and exit, go to bios again, flash to the latest bios (do it again if you're using the latest bios) ver 7C02v3F the one with agesa 1.2.0.7, go to bios after finished updating, then load default or optimized settings, enable fastest xmp profile, then save and exit.
  
  Optional: disable CSM, enable Above 4G Decoding and Resizable bar option (these 2 options wont be available unless CSM is disabled). If gpu supports, why not XD
  
  
• if successful, boot up to windows and install the latest Chipset driver (should be ver 4.08.xx as the time i write this), then reboot. Then check in power plan and AMD Ryzen Balanced Power plan is used instead of normal windows power plan.
  
  
• Install the latest radeon driver 22.8.2, reboot, and then connect to internet.
  
  *do this all offline until reboot after installing chipset driver, put ram on slot A2 and B2 (slot 2 and 4) if you only use 2 ram sticks, also you may reboot to bios after all of this to set the XMP (and previous settings you did). Download needed files (highlighted word) before doing step 1, do the step by orders.
  
  
• Run cmd as admin, then do chkdsk /x /f /r, after that do sfc /scannow
  
  
• And check windows update if there is any and install them (except optional update).
  
  
• Make sure the psu connected to the gpu is 1 pcie cable per 1 slot (use main cable, not the branches/split) like this: