"export as" automatically converts JPG to 96DPI

Hi, When I create a jpg with the "export as" function, photoshop automatically converts it to 96DPI even though my document is set to 300DPI. If I use the "save as" I can rip in a higher resolution, but with multiple artboards the "sava as" is not an option because the document becomes one big artboard. Can you adjust this so that I can save multiple artboards at 300DPI with "Export as".

Thanks!