Always when I'm using a VPN. It doesn't matter how many times I solve their puzzles it literally won't let me through half the time - I guess they've figured anonymous users are a waste of server resources.
When not working I'm forced to use a mix of duckduckgo, Bing and Yandex as I refuse to disable my VPN for Google.
I see it very often when using VPNs, both including needing to select pictures and it just letting me through immediately. I find it happens less when you are actually logged into a Google account. It doesn't completely prevent them, but Google will "trust" you more.