HELP! Camera Goes Offline When I Use AutoFocus At Night

Hello all.

I have an outdoor IR dome with a heater that slips out of focus at night, and when I try to auto focus, the camera goes offline for a about a minute, then comes back online and is still out of focus. I have had success using manual focus, but after a few nights, it slips back out of focus, causing frustration and headaches.

Has this ever happened to anyone else? Does anyone have a suggestion?

Thanks in advance!

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