PMDG 777 and 747 freezing after takeoff

[lukejw20 7]

Hello. I have a recurring issue. Shortly after takeoff, the PMDG 777 and PMDG 747 both cause FSX to freeze for about 3-4 minutes and then resume, and then it doesn't happen again. It only happens after takeoff on these two planes. I checked the task manager to see how much memory FSX SE was using and it was about 911-912 mb, which is about 1000 below the memory limit for a single app. Again, its not crashing, but freezing for 3-4 minutes after takeoff, then resuming, and then running smoothly for the rest of the flight. The PMDG 737 has no issues. Any ideas?

[HighBypass 2,339]

Do the planes exhibit this no matter which airport you take off from, just asking to eliminate a possible scenery issue: Detailed scenery + complex aircraft... you know the score. 

[lukejw20 7]

Yes no matter what airport. I have taken off on the 777 from Athens and Jakarta and the 747 from Guangzhou in the last month and on all three flights, FSX has frozen after takeoff for 3-4 minutes, and then resuming and running smoothly. Here are my scenery add-ons:

Orbx - FTX Trees HD

Flightbeam – Phoenix Sky Harbor

Taxi2Gate – Orlando Int’l

Imaginesim – Atlanta Hartsfield Jackson Int’l

Ultimate Water X

Ultimate Night Environment X

Aerosoft – ZRH

Zinertek - HD Airport Graphics

Zinertek - Natural Tree Environment

Zinertek - World Environment 2012

Various liveries and sceneries from the AVSIM library

[Jim Young 2,356]

On 6/16/2019 at 9:23 PM, lukejw20 said:

Yes no matter what airport.

According to the AVSIM CTD Guide, this is caused by the FSUIPC Autosave feature.  Disable.

[lukejw20 7]

I'll try that. Thanks!