Choose instance type for AppStream Image Builder - what to choose?

When starting an image builder för AppStream 2.0, I must choose instance type. Sub header states that I must Select an instance type that matches your applications' requirements. and the info text states Choose the instance type that matches the performance requirements of your users' applications. All of the streaming instances in your fleet will launch with the instance type you select..

I was hoping that I could create one image, that I lager on you deploy to instances of different types, depending on the processing power requirements for each use case. I thought the instances in my fleet would launch with the instance type specified in that fleet, not the one I selected when building the image.

For my region the URL would be https://eu-west-1.console.aws.amazon.com/appstream2/home?region=eu-west-1#/launch-image-builder

Is this perhaps just a misleading info text, or will the image be bound to the selected instance type?