Quality in image editor after rendering

[olegipman (Oleg Bondarev)]

Hello everyone!
Have one problem with image editor. While rendering is go image is cool, but after render finished looks like resolution decrease. But when I save an image, quality stay cool. Why is this happening?
I used Blender 2.92 Alpha on Manjaro Linux and official stable 2.91 on Windows 10. Same problem.

While rendering:

After compositing, but just “view layer - noisy image”

After save image (jpg) :

[olegipman (Oleg Bondarev)]

I found solution, or… May be mistake. In preferences was enabled “Texture limit size”)))