Under some circumstances, Arc Control Performance Tuning settings are automatically applied when updating to driver 31.0.101.4577.
When Intel® Arc™ Control Performance Tuning settings are enabled, and the Apply settings on the system boot option is checked, if your system is updated to driver version 31.0.101.4577, these settings might be automatically set to random values after rebooting.
This issue was corrected in Arc Control version 1.74.5391.3, which is included in driver 31.0.101.5186. Install this or a newer driver.