can't give you exaxt solution but you could try few things
1. do a speed test and see the numbers for remote work it's best ot have more tahn 10mb/s do a speed test with mobile phone at exact same location and see if there is too big of a difrence it's ether drivers or network card
2. try to reinstall drivers for network card.
3. try difrent os (u can use usb bootable os just for speed test)
4.if you can use wired network i know it's not ideal for everyone
5. reinstalling os
well that is about it from my side sorry for not being more usefull