ProperTree VS gfxutil

Open the config in ProperTree (https://github.com/corpnewt/ProperTree) and do a clean snapshot (CMD-SHIFT-R). This will put all of the kexts in the right order.

Open your config.plist using ProperTree.

NO. Prebuilts are a bad way to start. They are not updated and aren't configured to your specific needs. Make your own EFI and also don't use OCAT, use ProperTree which can do OC specific things like OC (clean) snapshots.

ProperTree

Try looking into a program called ProperTree. Has a GUI implementation to easily edit https://github.com/corpnewt/ProperTree

Used the Ryzen and Threadripper(17h and 19h) OpenCore Install Guide for with OpenCore v0.8.7 in combination with OpenCore Auxillary Tools, Sanity Checker & ProperTree.

Use propertree. It is hands down, the best IMO. https://github.com/corpnewt/ProperTree

You need to mount your EFI partition (find a tool online or use command line). In it you should find "EFI/OC/config.plist". Open the file with Propertree or another plist editor and make the changes.

If anything, keep .contentFlavour files removed and try updating your config.plist using ProperTree or some other plist editor which just makes it easier to read. Sorry I couldn't be of much help but its the best I've got right now haha.

The entry will not already be there in your config. You'll have to add it yourself. First you'll need to figure out the path to your GPU using gfxutil. When you run the command you'll see a list of all the PCI entries. On my comp it was the line with GFX0. You'll then take the whatever text is after the = sign, add that under DeviceProperties > Add. Then add a child to that with the PP,PP_WorkLoadPolicyMask set to 1 . It should look like this. Once added, restart and say bye to coil whine!

Add it to your DeviceProperties > Add > DeviceID in your config, and it should work. You can find it in any number of ways, including the Guide.

downloaded gfxutil (github)