Also Updated to 1.1.0 today.
I got same problem, using FS Global Ultimate - NG 2020 mesh.
I also have terrible fps at night in default P3D aircraft, in front of terminal/tower. Something really strange here.
Normally i have 36 fps (locked at 36) at night, inside cockpit with PMDG 737 at airports with dynamic lights on, like payware airports ESSA, EKBI, ENGM, EKCH, EGLL etc.