[HELP] UHD 620 (Kaby Lake-R) no acceleration

So I've recently decided to install OS X Catalina on my surface pro 6 (i5-8250U) and I've reached the point where it boots and works fine, but everything is laggy. Turns up the acceleration is not working as the OS reports only 19MB (out of the 1.5k it should be outputting).

I've followed Dortania's guide and added AAPL,ig-platorm-id=00001B59 and device-id=591B0000 as indicated on WhateverGreen's patching guide to the DeviceProperties of the config.plist, but it doesn't seem to work. Is there something I am missing?

Here is my OC folder: https://gofile.io/d/VCfoLf

Thanks!