The trouble is the amount of pressure one has to apply now! Originanlly, it was a gentle push down and hold. Now one has to press with an iron grip AND KEEP IT LIKE THAT TO RUN 50 metres. It wasn't difficult , now it is insanely difficult to do or maintain. I hope you appreciate this.

I don't know what you're talking about, literally nothing has changed for me (I'm on the default settings if that matters) other than now if I click the stick mid sprint it'll cancel my sprint. No change in pressure at all.

Must be the controller I am using then, a basic Xbox One wireless. I just had some fun in Crucible, but I had to thumb it harder to do what I intended. Only thing I can think of mate.

Is your sprint set tk button hold instead of button push?