SuperSampling Antialiasing

[SamBigAbs]

When working with large images I often upscale the image then downscale the result because images larger than 2048 in either direction causes temporary graphical glitches.
An option to have 1.5 , 2.0 , 2.5 , 3.0 , 4.0 super sampling would be helpful.
For example, If the 2.0 super sampling option was picked and the chosen tile size was 512 it would scale the 512x512 input to 1024x1024 , perform the diffusion , then scale it back down to 512x512.
Inpainting already does this for the masked content if the resolution does not match the source image.
Not essential but would be a nice feature to have :)