Just tested it a bit i few games at close range without moving the sensor.
Wow, it works better! It was really a range issue: now that the CPU load is less, it recovers faster and I can practically dual yield guns close to 360 all around even when there are occlusions.
My calibration was actually like you have explained. Jitter is worse with distance from sensor.
It is playable at room-scale but with jitter.
PS. did you enabled vibration? One of my games(using Unreal engine) starts to have it! But the controllers tracking don’t work(stayed on the floor at default position but with functional buttons). Don’t know whether it is a problem with the game or Driver4vr.