Every session I get somewhat random tracking errors and this appears in the logs. I see A LOT of lines of "IMU went off scale." during quick movements in games like Beat Saber, and I can consistently recreate this by snapping the triggers on either of my controllers. Doing so causes the controllers to float and jitter and then slowly reset to the correct position.
Here is a sample of what appears in vrserver.txt
Sun Dec 09 2018 00:14:41.956 - lighthouse: LHR-FF8CF945 C: IMU went off scale.Sun Dec 09 2018 00:14:45.306 - lighthouse: LHR-FFC9BF41 C: IMU went off scale.Sun Dec 09 2018 00:14:45.314 - lighthouse: LHR-FF8CF945 C: IMU went off scale.Sun Dec 09 2018 00:14:53.919 - lighthouse: LHR-FF8CF945 C: IMU went off scale.Sun Dec 09 2018 00:14:58.003 - lighthouse: LHR-FF8CF945 C: IMU went off scale.Sun Dec 09 2018 00:15:04.719 - lighthouse: LHR-FF8CF945 C: IMU went off scale.Sun Dec 09 2018 00:15:11.260 - lighthouse: LHR-FF8CF945 C: IMU went off scale.Sun Dec 09 2018 00:15:15.153 - lighthouse: LHR-FF8CF945 C: IMU went off scale.Sun Dec 09 2018 00:15:16.219 - lighthouse: LHR-FFC9BF41 C: IMU went off scale.Sun Dec 09 2018 00:15:16.243 - lighthouse: LHR-FFC9BF41 C: Resetting tracking: rotating at 3520.4 deg/sSun Dec 09 2018 00:15:16.243 - lighthouse: LHR-FFC9BF41 C: Dropped 29793 back-facing hits, 23 non-clustered hits during the previous tracking sessionSun Dec 09 2018 00:15:16.393 - lighthouse: LHR-FFC9BF41 C: ----- BOOTSTRAPPED base 50B4359A (immediate) distance 2.14m velocity 0.98m/s base pitch ~32.5 deg roll ~-0.8 deg -----Sun Dec 09 2018 00:15:18.060 - lighthouse: LHR-FFC9BF41 C: ----- CALIBRATED base 50B4359A at pitch 32.55 deg roll -0.94 deg -----Sun Dec 09 2018 00:15:18.060 - lighthouse: Updating tilt for 50B4359A: Old= 32.63, -1.39, 1.95833e-06 <- 0.45 deg -> new= 32.75, -0.93, 8.56387e-07 result=32.75, -0.93, 8.56387e-07Sun Dec 09 2018 00:15:18.078 - lighthouse: Saved LighthouseDB rev 320 to C:\Program Files (x86)\Steam\config\lighthouse\lighthousedb.jsonSun Dec 09 2018 00:15:19.213 - lighthouse: LHR-FFC9BF41 C: ----- SECONDARY base 7813C069 distance 2.10m -----Sun Dec 09 2018 00:15:19.602 - lighthouse: LHR-FFC9BF41 C: ----- RELATIONSHIP bases 50B4359A <-> 7813c069 distance 3.56m, angle 175.43 deg -----Sun Dec 09 2018 00:15:30.468 - lighthouse: LHR-FF8CF945 C: IMU went off scale.Sun Dec 09 2018 00:15:30.470 - lighthouse: LHR-FFC9BF41 C: IMU went off scale.Sun Dec 09 2018 00:15:33.319 - lighthouse: LHR-FFC9BF41 C: IMU went off scale.Sun Dec 09 2018 00:16:01.187 - lighthouse: LHR-FFC9BF41: Updated IMU calibration: Accel bias change 0.09m/s/sSun Dec 09 2018 00:16:01.204 - lighthouse: Saved LighthouseDB rev 321 to C:\Program Files (x86)\Steam\config\lighthouse\lighthousedb.jsonSun Dec 09 2018 00:17:08.385 - lighthouse: LHR-FF8CF945 C: IMU went off scale.Sun Dec 09 2018 00:17:11.273 - lighthouse: LHR-FF8CF945 C: IMU went off scale.Sun Dec 09 2018 00:17:11.693 - lighthouse: LHR-FFC9BF41 C: IMU went off scale.Sun Dec 09 2018 00:17:21.217 - lighthouse: LHR-FF8CF945 C: IMU went off scale.Sun Dec 09 2018 00:17:25.899 - lighthouse: LHR-FF8CF945 C: IMU went off scale.Sun Dec 09 2018 00:17:30.441 - lighthouse: LHR-FF8CF945 C: IMU went off scale.Sun Dec 09 2018 00:17:32.107 - lighthouse: LHR-FFC9BF41 C: IMU went off scale.Sun Dec 09 2018 00:17:35.305 - lighthouse: LHR-FF8CF945 C: IMU went off scale.Sun Dec 09 2018 00:17:42.382 - lighthouse: LHR-FF8CF945 C: IMU went off scale.Sun Dec 09 2018 00:17:45.983 - lighthouse: LHR-FF8CF945 C: IMU went off scale.
