Macbook Pro 16" (2019) cannot be charged while running Unreal Engine 5.0.3

When I launch Unreal Engine 5 and play around with it (like simple mouse drag and zoom, nothing crazy), my Macbook pro is super hot and the fan runs loudly. If I charge it at this time, it jumps between charging mode and not charging mode all the time and no charging is performed.

I have rendered through Blender all night long and it can still be charged at that time. I would like to know if this is the hardware problem or this Macbook model and system can hardly handle Unreal Engine. Thanks.

*My Macbook was repaired around 2 weeks ago and the whole motherboard(?) was replaced.

*No other heavy app is running at the same time, just Chrome.

*Processor: 2.3 GHz 8 Core Intel Core i9