Just noticed another thing from this, I'm not a driver so it hadn't appeared for me yet, but after googling it seems that loads of people are encountering it, but yeah if you are traveling at any speed now you wont be able to hit pokestops for items, a fake attempt at stopping users from driving and playing and more a way to try to get people to buy items from the store rather than have easier ways to farm pokestops on the tram or bus to work.
But yeah I experienced this shite tonight... while out for my Jog, I had to intentionally slow down to a walk for the pokestops on the route I take because otherwise I was getting a "try again later" message whihc would persist even after I stopped for a few mins... in close to 0degree's temperature to see what the issue was... terrible terrible terrible terrible... it really saddens me to see that the game is now deep in the 70s in popularity but is still number 1 in grossing, just means that rather than trying to draw more players in they are just aiming to drain the cash from the people who are still playing it I guess the logic is "if you haven't quit with all the bs so far, you'll never stop paying us for this" but it really annoys me that there are players out there pumping in more money because of broken features in the game, I mean.. if people didn't pay for items then their cash would go down and they might revert changes, but as people pay Niantic to break more features then I see the trend continuing until they basically have converted every aspect of the game into a real life money drain for the remaining handful of players.
Anyways, guess it's an ego boost, I now Jog too fast for Pokemon Go, go me!