Yes, a well-designed system can minimize the impact by for example lazy-load the font file or even `Font Face Observer`[0] them for manual hot swap. But that i

Yes, a well-designed system can minimize the impact by for example lazy-load the font file or even `Font Face Observer`[0] them for manual hot swap. But that is not the main point. The main point is: You are the one who's in charge of the user experience, not Google. Don't shift the responsibility to somebody (external service) you don't have control of. The software works the best when all it's parts are predicable, and make it more self-sufficient can help. [0] https://fontfaceobserver.com/ https://fontfaceobserver.com/