To turn off suspense with i18n-next React, we set the useSuspense option to false.

To do this, we write

i18n
  .use(XHR)
  .use(LanguageDetector)
  .init({
    react: { 
      useSuspense: false 
    }
});

to set useSuspense to false in the object we pass into the init method.