Same issue like the rest... I have a perfectly working P4 until the latest firmware below broke everything. Compass and radio signal are impacted heavily and I didn't even crash my drone. But I almost lost it (luckily for the RTH function).
"Same issue like the rest... I have a perfectly working P4 until the latest firmware below broke everything."
You are not on the latest firmware, so not like the rest, if the information you provided is correct.
If sitting on the floor the compass might well be getting affected by screws/nails/pipes/electric cables under it. The RF interference shown is certainly not unusual. If you've tried recalibrating your compass indoors then that could cause problems.
"I'm at lost here."
What you need to do is upgrade your aircraft to the latest firmware which is V02.00.0700 (2018/01/24), not V02.00.0106 as you've posted.
I would try updating it using DJI Assistant 2 which can be downloaded from Here
First Officer