Google is saying users of YouTube, Gmail and other services are seeing errors or slow performance due to high levels of network congestions in the eastern United States.

YouTube, Google Cloud and G Suite services have been affected, but Google said it believes it has identified the cause of the congestion and expects to return to normal service shortly.

According to reports on social media, the issue is also affecting companies that use the Google Cloud platform, including Snap, Shopify and Uber. However, it's unclear to what extent the issue is affecting services in Australia.

Some users of Google's smart home products have even reported being unable to turn on their appliances.