Check the display color profile on your mac. For testing set it to a sRGB profile and see if that helps.
Does it have to be a SRGB profile? It doesn't seem like that helps. It is not a color issue. It's a quality issue. The image looks fine in the library module but once switched to develop it almost seems like the image doesn't download/load entirely and therefore is not clear.
Something is causing the video subsystem to not render the image in full resolution—it appears to be stopping after it’s loaded the low-res preview thumbnail expanded to fill the screen which normally happens for a small amount of time before LR will render the image at full resolution. Sometimes the data in a monitor profile can be something that LR doesn’t quite understand and it’ll not render things correctly. Sometimes this manifests as a gray placeholder image, sometimes as a color tint. Switching the monitor profile to the standard sRGB profile, temporarily, can make sure the color profile is ok and not the problem.
A couple other things to try would be clear your Camera Raw cache using the button in LR – Preferences and trying importing a few images in a new catalog to see if they have the same problem.