FPS drop to unplayable since Patch notes 2024-09-25 (Experimental) fixed by investigating another comment about SMT. Running 'echo off | sudo tee /sys/devices/system/cpu/smt/control' prior to starting game then 'echo on | sudo tee /sys/devices/system/cpu/smt/control' after closing game to toggle SMT - can check SMT status with 'cat /sys/devices/system/cpu/smt/active' prior to making change 1 = on 0 = off