Reports of Raptor Lake instability issues have been at an all-time low since Intel released firmware updates several months ago — but they're not completely gone. Intel released microcode update 0x12F last week to fix Vmin Shift instability, an issue that was thought to have been fixed with previous microcode updates.
Microcode update 0x12F is reportedly an extension of the microcode update 0x12B, and it supplements 0x12B with additional fixes that weren't covered. Specifically, 0x12F fixes a limited issue surrounding instability on Raptor Lake systems operating for multiple days in a row, running low-activity, lightly-threaded workloads.
