During the recreation of my application user interface, I added an additional grid with an image to the page. Unfortunately, the page flickers unbearably every time you play a video. When you delete this image, flicker disappears. I tried using BitmapCachefor many elements on the page, but the flicker persists. Any ideas on why this is happening?
The screenshot below shows the number of elements that a rotation element has:

XAML: http://pastebin.com/Z4JF0sfj
Just extra info: I'm testing the application in WP 8.1 Preview. I do not have access to WP 8, so I do not know if this is happening there.
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