Hangs permanently on

Hello There,
I bought the camera 2 weeks ago, mounted one day after delivery in the car. The camera is very small and unobtrusive. Operation and menu navigation simple. The image quality is adequate for the price (at night extremely poor, useful in day). The recorded sound can be forgotten, there is hardly anything to be heard. This restriction is for me not a problem. One negative point, for those who is secure Videos following: I suppose the camera does not compress the data. A video 3 minutes in length has so between 400 and 500MB!
As for the top line, I see the camera with 3 stars.

Why I forgive 1 Star?
Unfortunately, it is so that the camera hangs at random intervals. Time after 5 minutes, sometimes 30 minutes. This manifests itself in blue / green bars at the top and bottom of the display. The image is displayed still current and updated, however, the data or video files are corrupted from that moment.
I bought the camera a Transcend Micro SD with 32GB, at first I thought it is on the map. Following I have an existing Samsung Micro SD with 32GB and 16GB SanDisk tried with - the problem persists.
, Reliable image quality movies or not they need!

What perhaps also worth mentioning:
The dealer / manufacturer specifies in a note to evaluate by calling the camera on Amazon. Following an e-mail message to the dealer must take place, and gives an encore: magnetic mount, carrying case and cable clip.
I find it almost brazen, now that many reviews are also clear to me :)

Greeting Smartie