I use Firefox with uBlock Origin, Privacy Badger, Google Container and Decentraleyes and am not signed into Google. ReCAPTCHA is an absolute nightmare under these conditions. It's sad because there is one site I absolutely need that has ReCAPTCHA when logging in. I literally keep another browser (Opera) around with no extensions just so I can log into that one site.

I sometimes use Random User-Agent as well to resist fingerprinting; this makes ReCAPTCHA not just extremely tedious (up to about 10 rounds of sl-o-o-o-wly fading pictures) but literally impossible (it never ends).