You must have the SKSE version corresponding to 1.6.353 (typically v2.1.5 ). You can verify your version by typing getskseversion in the game console.
To use this fix effectively, ensure the following environment is set up: FSMP - Faster HDT-SMP 1.6.353 Fix
This specific fix addresses the "Version Mismatch" error that occurs when the Skyrim Script Extender (SKSE) version does not align with the installed physics plugin. You must have the SKSE version corresponding to 1
As part of the "Faster" HDT-SMP branch, this fix maintains optimized AVX/AVX2 instruction sets, which reduce the CPU overhead typically caused by complex physics calculations. Installation & Requirements FSMP - Faster HDT-SMP 1.6.353 Fix