Two problems: big green light and low brightness taxiway

The first picture: x-life is not running:
attachment #1 Attachment icon _1_notrun.png

The second picture: After running x-life, the big green light appears:
attachment #2 Attachment icon _2_greenlight_run.png
attachment #3 Attachment icon _3_greenlight_run_big.png

Fourth picture: After running x-life, after a few minutes, the brightness of the taxiway becomes low（Please compare with the attachment #1 picture.）:
attachment #4 Attachment icon _4_greenlight_LowBrightnessTaxiWay_run_big.png