When I mount up and press spacebar to spur my horse, it only spurs once, and my spur charges immediately go from 3 to 0 and never recover. So basically I can only spur 1 time per mounting. This issue only started happening in the expansion and did not happen before.
Edit: Possibly caused by mount armor “Ash Knight’s Destrier”??
OMG your edit is correct, i have had the same issue in a seperate post. changing the armor solved it
yep this has been happening to me also
Yes this is a really lame issue I am facing as well 
This issue is happening to me too using the Ash Knight’s Destrier horse armor. It’s so bad I’m probably going to refund it, so don’t buy this armor if you like to use fast horse speeds.