Using software version 2025.14.1 with FSD (Full Self Driving) version 12.6.4. About 50% of the time the vehicle attempts and fails to change lanes when using FSD. It will: 1. Turn on signal and not change lanes, confusing cars around me. Or more often 2. Swerve between lanes indefinitely. See example at [XXX] It drives like a drunk driver. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)