Render to texture problem

Hi, I have problem with quality of render to texture object. It seems like there is no antialiasing on the image (2048x2048 resolution) and the colors are different. You can see it on the reflections. Its awful. There is some way to fix this?
Link to video, (left is a camera, on the right is render to texture object) -->> Zegarek on Vimeo

I do not believe anti aliasing is supported.

Regarding colors, it is most likely either using linear colors or incorrectly double applying a gamma curve.

You could try counteracting the srgb curve by doing a Power with exponent 0.4545 on the render target in your material.