Do you have the same issue if you follow the OP’s steps to reproduce it?
YES
Provide extra information to complete the original description of the issue:
When ready for taxi, setting prop conditions to AUTO while throttles are at idle, NP% builds randomly up to 60% (not enough) or 70.8% (what it should be always). If it builds up to 70.8% electrics and hydraulics work fine… if not, little increase in one engine throttle fixes the issue. But when starting taxi, need to decrease throttles to avoid too high speed as currently aircraft already accelerates on idle quite fast when brakes set off. But throttles on idle NP% fails maintain 70.8% and drops back to approx 60% several times, suddenly losing all hydraulics (and therefore brakes!!)… need to increase throttle again to get hydraulics back and be able to slow down… sounds quite fun, apply throttle to reduce speed.
But this issue must fixed ASAP, as it’s not definitely normal operation. Discussion (screenshot attached) on other thread already stated that no matter what weather conditions or anything are, that NP% 70.8 should be built up and locked also.
If relevant, provide additional screenshots/video:
