Can not record with new P3A

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I have put this on the wrong page. So I'll re-post this on the Phantom Help page.

I have problems recording video on my brand new P3A (App: 2.4.2, RC: 1.5.70, FW: 1.5.3).
After taking a photo, It is sometimes impossible to record a video.
The blue waiting sign around the photo button (hour glass) keeps rotating.
Sometimes it also takes a long time before I can stop recording.
Has any seen this before?
The photo's and video's on the SD card are all OK, but I will format it just to be sure.

Occasionally I get the message Weak RC Signal. Even at close range.
I even tried linking the RC again.

Could either the RC or the AC be defective?
no record2.jpg
 
I think I might have found the cause of the recording issues: I was shooting in JPG+RAW mode.

If I take 3 images just after each it takes ~20 sec before the writing is finished.
With JPG this is less than 3 sec.

I tried the original DJI SD card (Panasonic 16 GB HC 1) and a Sandisk Ultra 32 GB HC 1.
They give similar results. Formatting does not help.

I tried to get more accurate time stamps so I put the camera in AEB (Auto Exposure Bracketing) mode and took 5 pictures.
Windows shows the creation time in minutes so I turned to CMD.exe and gave this command to get the timestamp in seconds:
>forfiles /c "cmd /c echo @file @ftime"

JPG:
"DJI_0001.JPG" 21:30:10, "DJI_0002.JPG" 21:30:10, "DJI_0003.JPG" 21:30:12, "DJI_0004.JPG" 21:30:12,
"DJI_0005.JPG" 21:30:12, 2 sec, 18.6 MB = 0.48 MBps
RAW:
"DJI_0006.DNG" 21:30:50 ... "DJI_0010.DNG" 21:31:10, 20 sec, 118.9 MB = 5.9 MBps
JPG+RAW:
"DJI_0011.JPG" 21:31:24 ... "DJI_0015.DNG" 21:31:46, 22 sec, 137.5 = 6.2 MBps

According to the Sandisk site the speed should be 30 MBps.
I see similar speeds in these post:
MicroSD card testing for photography, 5 shot AEB | DJI Phantom Forum

Is this a speed limit of the phantom 3?
Is there a difference between the P3A en the P3P?
 
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