When loading a model of more than 100 m, the following errors will be reported, but if the model and material are loaded separately, it will not report an error. Why?
You mean 100 megabytes? How much of this size is vertex data? How much textures? Can you share the file? I can see a WeGL context lost error too. Share the whole log from the console.
The context lost is probably an indication that your driver crashes 