Eufy 2C image gets dark in Apple HomeKit after 10 seconds

I have integrated two eufy 2C cameras in Apple HomeKit. I like the function that the image of the camera is updated automatically every 10 seconds, since this only works manually in the eufy security app (press the play button). Problem: The image from the camera darkens after 10 seconds. This occurs during the day and at night (IR). You can hardly see anything anymore. Does anyone have that too? What solution is there to keep the camera image bright after 10 seconds?