Problem with my GPU

I am running unreal engine with a good processor and a Radeon 7880. I am having a problem where the GPU keeps running at 100% all the time making it impossible for me to run unreal. Does anyone know any fixes or hints for solving this? Thank you for your response.

there is no such thing as a Radeon 7880 do you mean Radeon 7870? give me the proper Name of your VGA it could be an old unsupported one.

anyway update your graphic card driver as this is the first thing you can do to fix GPU issues if there is any at the software level now assuming you have the Radeon 7870 the editor should run fine .