Big Sur on AMD R5 3600, RX 5500 XT, MSI B450m Mortar. Reading, understand and carefully following the Dortania's OpenCore Install Guide is the key. Still waiting for it to crash/freeze but
Call of Duty: Modern Warfare : Ryzen 5 3600 + RX 5500 XT 8GB | 1080p & 1440p | Low & High Settings - YouTube
PCI-e 3.0 x8 may not have enough bandwidth for RX 5500 XT | Page 3 | TechPowerUp Forums