I am also facing two problems with hue motion sensors directly communicating with HA via custom component integration:
- Response time of motion sensor is high, as you rightly mentioned and provided alternate options
- 3 different sensors behaving differently, if you keep moving in front of them for prolong duration (30sec-2min).
One of them changes state “Detected” to “Clear” but stops sensing subsequent motions while the other two detects but their time to respond to subsequent motions are better comparatively.
All these triggers a pair of rules to turn on light when motion “Detected” and another rule to turn off when motion status stays “Clear” for a specific duration. Sensors’ inability to re-detect prolong motions causes incorrect HA trigger to fire and it turns off light even if you are in front of it.
Their motion sensitivity settings are “High” for all 3 of them, as seen via hue app. Battery levels are 100%, I don’t know what is their slew rate for motion sensitivity or anything else can be done for frequent detection of motion.