Window Export takes 5minutes to open when export Artboard

Dear all here.

I work with artboard in my Photoshop. I create 5 Artboards with 1080px x 1080px for instagrams.

Unfortunately, when i want to export it to jpeg by clicking File -> Export as , the window export takes 5 minutes to 10 minutes and sometimes 15 minutes to open. Is it normal?

Thanks.