Ace Pro overheating problem

Good morning, I purchased the Ace Pro and I am very happy because it is a wonderful action camera. However, I noticed that when recording videos in 4K the camera heats up. It doesn't get too hot but the heat is quite noticeable.

Today I tried to record in 4K and, during recording, I connected the camera to a power bank. After 45 minutes the Ace Pro stopped recording because the camera had become hot.

Is the fact that it heats up and even stops recording normal? What can be done to prevent registration from being blocked?

A thousand thanks