I remember that almost every update caused the patch to stop working. The solution was to always set it to the maximum.
AppleXcpmForceBoost
Description: Forces maximum performance in XCPM mode.
This patch writes 0xFF00 to MSR_IA32_PERF_CONTROL (0x199), effectively setting maximum multiplier for all the time.
Maybe using SSDTPRGEN will work
https://github.com/Piker-Alpha/ssdtPRGen.sh