Has the routing algorithm changed?

I've used the website for years to plan circular routes, but now it seems to be different. Before it would take me through parks and along canals and near sites of beauty, but now I just get main roads. Usually I could set it to 40km or so and it would take the same sort of route every time, but now it takes me strange places down main roads, and seems to avoid parks at all cost.

Is there a setting or something ive somehow changed?