[PC Steam] Repeated mid-game BSOD / crashing, different every time

Initially, had Secure Boot enabled in BIOS but msinfo32 didn't show it enabled. Had to restore Factory Keys in BIOS to fix that. 

Game performs fine and is enjoyable, but randomly while playing Windows crashes, usually with a Black/Blue Screen of Death (BSOD). This occurs about once every few matches on average. Event Viewer shows a different Bugcheck code each time including... 

0x00000050
0x00000018
0x0000003b
0x00020001
0x0000000a

On one occasion, the OS froze (game, Discord, Task Manager, and other apps) where not even Ctrl-Alt-Delete responded. A physical reset was needed. 

OS: Windows 11 Pro 
CPU: i9-9900K 
GPU: NVIDIA GeForce RTX 3090 
RAM: 32GB 
Secure Boot: enabled (shown in msinfo32)