Large octa shake in loiter mode

I’m trying to tune a large octa with 50kg load. It seems good in stablized & altHold mode, but becomes shaking when swithing to loiter mode. I have removed interference of the compass, and reduced the weight of load. But it didn’t work. Any ideas? logs here.!ArC3tBoxhy5_jmSbQCAwnpp6Mwrr?e=G8Y6E9