Foscam 'flare'

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I have two Foscam FI8918W running over wireless and a FI8904W running directly connected to ZoneMinder in motion detection mode. Every so often the outdoor one, will have what I call a flare where the colour goes completely awry and what I see is a top to bottom scroll of mainly red and then back to the original colours.

The other two sometime have frame shifts which I assume are hiccoughs in the wireless signals.

Anyone had anything similar and is there any potential cure for either problem.