Hi,

I have been strugling with my internet connection for around a week. This is what I have gathered until now:

• My computer has a network card (TP-Link Archer T5E) that supports Wifi 2.4GHz and 5GHz.
• The router supports 5GHz and 2.4 GHz (TP-Link Archer C6)
• I can connect to the 5GHz network, but the internet connection is extremely weak (4-20 kb/s) or there is no internet at all (the wifi connection is established)
• I can connect to the 2.4GHz network without any problems, where the connection quality is good
• When connecting to the 5GHz network using the ping command in the command line, the host is missing, packets are lost or the command takes too long
• Other devices connected to the same network work correctly
• When I connected to the mobile internet (hotspot), the internet was of good quality
• I restored the router to factory settings, but it didn't help
• I updated both router and network card but situation didn't change
• I am using Windows 10 Home

What can I do to restore the correct connection to the 5GHz internet?