After major updates like yours sometimes Windows installs its own crappy drivers instead of the proper ones. Get the official network driver here
https://www.asus.com/support/Download/3/719/0/1/H1PGPvZ0ODsnDxTf/41/ . Uninstall your current wireless network driver through Device Manager and install the one you get from the link above. Just make sure to get the correct one. if you an Intel network card then get the Intel driver, if you have Qualcomm get the Qualcomm driver etc. Most of the models have Intel network cards but double check just to be sure.
As you said you already did that but check again, you might have gotten the wrong driver.
This may also sound very silly but have you tried unplugging your router and plugging it again?
