Objects have pixelated edges in both scene and game view

I'm starting with Unity3D. I have this sample 3D scene for a PC standalone application. All 3D objects have pixelated edges on both game and scene view. I went through previous posts and I tried methods like setting the scale to x1, Maximize on the play, and quality settings(Ultra). I tried to set Anti-Aliasing to 8x Multi Sampling and found the improvement in game-view but scene-view still has the same issue. Views and settings are in below-attached images. Any help will be appreciated.

Scene View:-

Game Views:-

Quality Settings:-

Don’t quote me on this, but I think scene view will always be lower-res, so that the system can operate better when moving things around and making the game