CuAV V5 - Big HexaCopter - Problems. Help

[Havas_Robotic]

Hello to everyone. I apologize in advance for translation errors.
I am making Hexacopter with CuAV V5 +. Radar will be installed underneath.
1-) I made a design considering Magnetic Interference. The pollution of the engine / compass calibration on the ground is minimal. It goes beyond the limits when it takes off. Is this normal? I canceled the internal compass. I think it’s resolved for now.
2-) The instrument cannot maintain its altitude in PosHold-Loiter mode. It oscillates up and down. It can remain stable horizontally. I suspect the barometer. Continuous EFK_ Primary_Changed error. Vibe_z vibration level is also rising.
I would be glad if you could tell me what the problem is. I seriously suspect the barometer!
Thank you in advance for your answers.
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[Havas_Robotic]

I think the problem is: VibeZ.
It’s too loud. I’ll be following the vibration reduction guidelines tomorrow. I share the result here.

[Havas_Robotic]

I solved the problem. Problem caused by vibration. I upload the changes I have made with their pictures. I hope it guides those who have the same problem as me. It’ll be helpful.
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NOt: “Use Compass 3” I also disabled the internal compass.
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[cuav_le]

hi, @Havas_Robotic is your problem solved?

[Havas_Robotic]

Yes, problem solved.