A770 - Xe-HPGThat's a strong point. Then we are back to it being a hardware issue?
MTL iGPU - Xe-LPG
ARL iGPU - Xe-LPG+
All are SIMD 8 Architecture with almost the same HW except for the fact that MTL/A770 Shares almost everything except the XMX engine and ARL iGPU has XMX Engine but all other features are the same it's the missing HW like Execute Indirect and stuff which is used by many games and a couple more. HW is decent to say the least it just requires software trickery to work with games they should integrate it and call it a day there is also the fact that some games have Intel iGPU Blacklisted to run the games to avoid issues there is that as well