HI, @djavco. My best guess is that your may have pre-compressed assets on the builds with the error. Netlify automatically provides compressed HTTP responses to any clients that support them so this means that, if you did pre-compressed assets, they are being compressed twice and only decoded once by the browser.
If so, my recommendation would be to not attempt to pre-compress assets and allow Netlify’s automatic compression to do the work required.
If you see this error again, a HAR recording will almost certainly have the information needed to confirm the root cause here. If you make a HAR recording of the error, please let us know.