Sapphire Pulse 5700 arrived. What would be the best order of steps to upgrade from High Sierra with a GTX 1060 (iGPU disabled) to Catalina... simply leave the 1060 in and upgrade, then swap to 5700 (and install WEG if needed)? I guess a lot of people will go down this path soon so it might make sense to put together a simple guide.
Also wondering whether I should wait for 10.15.1 to be publicly released as I haven't tried installing betas yet. Thanks in advance!
I did exactly the same with a 980 Ti and was successful.
My steps were:
0. MAKE A BACKUP!
1. Update all kext, clover and so on
2. Enable the IGPU and set primary display to it in the BIOS
3. Get it booting with the IGPU
4. Remove the old Nvidia card and the NV Web Drivers
5. Upgrade to Catalina
6. Upgrade to the least beta
7. Install WEG if you didn't have before and add "agdpmod=pikera" to the boot arguments
8. Shutdown and install the new Navi Card
9. Boot and enjoy
Maybe you have to change your SMBIOS definition to get hardware decoding working. This was the case for me.