When viewing a row of MRS extenders + fuel pods on a ship in a specific way, the fiery flickering graphics appears to change intensity, becoming distractingly flashing during the worst portions. The extenders are fully powered during the portion of the video showing it below.
Ship and save file is attached, ship was built within the MRS preview build but is unmodded.
Video of the effect: https://streamable.com/68ozgo
Have not done any extra testing on this but this definitely looks unintentional to me