Fake snow on the video of my Trackmix POE

[jpghts_130129873322119]

Hello,
I just installed a Trackmix POE camera a few days ago.
I don't understand why the image of it, every night, shows "snow", there is no snow, real snow, falling at the time of the screenshot.
This even creates a lot of false detections.
I attach the screenshot as an attachment.
It seems that I am not the only one with this problem. See the link below:
https://www.reddit.com/r/reolinkcam/comments/1gbmgeh/fog_displaying_on_cameras_like_snowflakes_any/?show=original
Thanks for your help.

[Chopstix]

@jpghts_130129873322119 is the IR on? IR lights can reflect off of dust particles, assuming you have some level of debris in the air.

[joseph_1979]

@jpghts_130129873322119 IR is reflecting back to the camera. Re-position the camera.