No @2x graphics for retin, does it make sense to interpolate it in Photoshop?

Question

Layout

The designer prepared only @1x images in the layout for layout. Question: Will bitmaps on @2x retinas be less soapy if Photoshop interpolates the original @1x graphic into @2x? Naturally, loss of quality is inevitable, but is there a way to generate better @2x graphics than the soapy one that is rendered automatically on retinas?

• What interpolation method would you recommend to use (bilinear, bicubic...)?
  
• Perhaps there is some plugin (Photoshop or Gulp) cat. does it work better than the regular way?
  
• Should I add post-processing: sharpen, contrast…
  

Answer 1

I wouldn't bother. First of all, it's possible that only @1x images were created for a reason. Offhand - for the sake of economy, so that the pictures load faster. It is clear that the quality will suffer in the retina, but the download speed is more critical (we choose the lesser of two evils).
Secondly, devices with a retina display are increasingly upscaling. That is, the operating system, video card or browser independently enhances the low-resolution image.
As for the question itself. The interpolation method and post-processing are highly dependent on the graphics themselves. That is, it is necessary to look and experiment. But if you need it simply and not confused, then Photoshop supports automatic interpolation, after which you can apply sharpness.
Don't say it's worth it. In fact, it's probably not worth it.