For technically inclined users, enabling HPET or ACPI features in the BIOS can also help stabilize game timing. One user described going into their motherboard's BIOS, enabling the HPET option, saving changes, restarting, and then applying the bcdedit command. This combined approach resolved their speed issues permanently.
Save the file and launch the game to test. Repeat this trial-and-error process until the character movement and vehicle speeds look natural. PowerTools vs. Gentlemen of the Row saints row 2 powertools
Why is my game still stuttering after installing PowerTools? For technically inclined users, enabling HPET or ACPI