Apparently, it’s been fixed in the latest beta 7, and the devs are asking for feedback (use this thread):
Yep.
Martial explains the major improvements to memory management in MSFS 2024 SU7 beta and asks the community to test long-haul flights and provide feedback. If you fly long-haul, this is your chance to help the devs evaluate the improvements.
So if you fly long-haul, please test it and share your feedback with the devs.
SU7 Beta - Long-Haul Feedback - Sim Update 7 Beta | MSFS 2024 / SU7 Beta Discussion - Microsoft Flight Simulator Forums
The one thing they refuse to even try to fix is the landing gear issues with traffic. 2 years in and we still see floating airliners on the ground.
Thank you John!
Those animations need a LOT of work, not just the landing gear.