Topic mentioned by @WingWarper1 is for msfs-2020 but issue could have been ported to msfs-2024 .
See also related reports in Sim Update 3 Beta | MSFS 2024 :
Worldwide helipads package causes poor performance at RJTT Haneda Tokyo
Series X: Why is performance SO bad around certain areas like Tokyo/Haneda e.g.?
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