Flickering and partially disappearing airport/runway lights

I’ve had the same issue but not every flight. It seems flights of about an hour and a half or quicker it doesn’t happen anything over that it does. It happened last night when I was flying into KSDF so I loaded in approach and then something else happened. Has anyone had the runway lights floating about 100 or so feet above the runway? It made the approach extremely confusing. The aircraft was flying very low of the glide slope and papis and I couldn’t figure out why until I flaired and flew right past the lights… O.O then I noticed the actual runway many feet below me still. Screen shot for reference. I loaded the same approach after and everything was fine??