Hi my friend, and thank you :D
What do you mean, can you give me an example please ? :)
Well, you've got conventional upscaling algos like Lanczos and Bicubic. There's some talk about how better results at upscaling could be produced by first upscaling 4x thru ESRGAN or BSRGAN and then downscaling 2x thru Lanczos, see: https://upscale.wiki/wiki/Model_Database
Not a video researcher so i'm not sure how if there's a possibility you could experiment with such a technique for future releases of QS