Try adjusting the "Standard Preview Size". You can do this by going to: Edit > Catalog Settings > File Handling > Standard Preview Size. Set it to a value that is bigger than the resolution of the screen you're using. Maybe also increase the quality.
But even if you set it to a very high value like 2880px, Lightroom still will scale down every image to have the longer side at this pixel value. Now, for "Normal" Aspect Ratios (3:2, 4:3, ...) this works fair enough.
But your Screenshots show a panoramic image, where the height (and thus the overall amount of pixels) is much lower than on the other images - so it can be that these Images still will look blurry if you are looking at them in "FILL"-Mode.
Lightroom only uses the 1:1-Preview if you zoom in, or if you go to Fullscreen Preview by Pressing F.