Bronxteck

you would have to look at your codec here https://github.com/acidanthera/AppleALC/wiki/Supported-codecs and try the different ID numbers

remove those 3 entries from config if you have them.

you can try igfxonln=1 whatevergreen flag

if you can change the value then try 256mb. some have reported that they sometimes have to load an older version of coreboot then move back to the latest. seemed to fix the no graphics loading issues for them.

it still looks to have issues with DVMT. maybe MrChromebox can help you.

csr values might have changed which might prevent kext loading

you need to update all parts of your efi that pertain to open core including opencanopy and openruntime drivers you can also use this if you need to update your resource folder https://github.com/acidanthera/OcBinaryData

https://dortania.github.io/OpenCore-Post-Install/universal/drm.html#testing-hardware-acceleration-and-decoding

try pointing the boot path to the oc binary not the bootx64 also make sure you dont have an efi folder within the efi folder.

https://www.insanelymac.com/forum/topic/339830-dell-monitoring-by-smm-and-fan-control/ there is also https://github.com/acidanthera/VirtualSMC/tree/master/Sensors/SMCDellSensors

glad it worked.

if it is IDT92HD91BXX try id's 12,13,33 or 84. if that is not good enough do as Herve says and just use voodoohda.

have you tried agdpmod=pikera instead of agdpmod=vit9696

you need to clear nvram.

try different values of finger z and see if it gets better or worse so if 10 is harder and 99 is faster or not if nothing changes then issue may lay in some of the other values.