You could try my suggestion here:
https://forums.sketchup.com/t/model-freezes-when-trying-to-import-from-3d-warehouse/104697/7
In terms of workarounds, doing a search for what you want in the Components panel, then click on the thumbnail of the model you want, will directly insert it without involve the 3D Warehouse page. Make sure not to click in the text of a model, that just opens the 3D Warehouse window on that model’s page.