I am excited to report that 11.3 appears to have fixed my sleep/wake and system crash issues with my LG 4K 32UL950 and M1 16GB/256GB. I had to initially change the monitor DisplayPort setting from 1.4 to 1.2 in order to have a somewhat stable system. After the update was completed last night I set the monitor back to 1.4 and have been testing the system and it’s all good SO far. I am running USB-C/TB to USB-C/TB.