The insufficient memory prompt implies that the computer's capacity is limited and cannot load an unlimited number of high-quality models. 

It will appear when too many blocks are loaded, so consider the following measures:

• Use DJI Terra's block splitting function, and customise the edge lengths up 300x300m 

• Unload some of the loaded high-quality model blocks before loading new ones 

• Save the current operation, exit the software and reopen it, then try loading new blocks