As a reader, I think it depends on the content of the scene as opposed to the length of it. If the content is meaningful to character development and/or the plot then I don't mind the length. If there is a meaningless, filler scene then the shorter the better.
When I alternate between the POVs, I normally write 1.5K-2K per POV or scene including the main character and love interest so it's balanced for the most part. If you want to challenge yourself then give 2K a try. I used to write 500-2K per chapter, now I can write 8K per chapter if I truly wanted to. Just find a reasonable comfort zone for you, but don't overdo yourself.