Completely agree. I have what I would consider to be a decent system (I9-11900K, 4070 TI Super, 64GB RAM) and have performance issues as well. I would much rather be flying the A350 but have been resorting back to the PMDG 777 just because the A350 turns into a slide show....
I believe that on an Airbus the flaps / slats have to be deployed in order for the logo lights to illuminate.
Try that and let us know if this addresses your concern.