Sideload AMD 780M Graphics driver (+ use an AMD Radeon eGPU

Before installing the driver, you have to edit a policy to disable Windows Update trying to replace your driver. Follow this guide and only do this part Disable automatic driver install from Registry.
Download DDU Uninstaller.
Download latest drivers for AMD Ryzen 7 processor with Graphics and get the one that is for 7840U (AMD Driver website). Make sure that you don’t download the Auto Detect version, download the complete one.
Reboot windows into safe mode (Use option 2) (safe mode is NOT needed–use only if issues)
Reboot windows and it will do a normal boot.
Delete C:\AMD folder.
Double click the driver setup file you downloaded in Step 2, it will extract all the files and then try to install it but it will fail (it’s as expected).
Open device manager in windows and locate Displays and click the one that says Microsoft Basic Display Driver then right click on it and select update driver.
Select the second option, the one that says browse my local computer, then in the next windows select let me pick the driver.
In that screen, click have a disk and browse the C:\AMD\AMD-Software-Installer\Packages\Drivers\Display\WT6A_INF\ folder there should be a INF file (for this version file name is u0400566.inf, if that file is not there because newer version, there should be a similar named one).
Once the INF is selected click OK and a list of drivers will show, scroll and select the one that says Radeon 780M Graphics (it must say Graphics at the end).
Click OK and driver will begin to install.
Once driver is installed, you have to install the Adrenaline Software (AMS Settings app), this is also located at C:\AMD\AMD-Software-Installer\Packages\Drivers\Display\WT6A_INF folder inside a subfolder currently named B400392, the file name is ccc2_install.exe.
Reboot the Go and driver/application is ready.
Open AMD Settings and select Default as profile, Integer Scaling works with this driver.