Faster image scaling/resizing

Hello,
I am wondering if there are faster methods available for image resizing that Serviio could make use of please? For example, an option to use faster but lower quality scaling methods/libraries within Java (preferably a selectable option in the Console maybe?), or perhaps using a 3rd party tool to do the resizing? I find that loading of images with Serviio can be quite slow on an older/slower PC.
Another option is to resize images to match to native resolution of the renderer, e.g. all images resized to a maximum of 1920x1080 for Full HD televisions.
Thanks in advance for your consideration.
I am wondering if there are faster methods available for image resizing that Serviio could make use of please? For example, an option to use faster but lower quality scaling methods/libraries within Java (preferably a selectable option in the Console maybe?), or perhaps using a 3rd party tool to do the resizing? I find that loading of images with Serviio can be quite slow on an older/slower PC.
Another option is to resize images to match to native resolution of the renderer, e.g. all images resized to a maximum of 1920x1080 for Full HD televisions.
Thanks in advance for your consideration.