Does anyone else have complaints with training?  my low level tier 6, level 16 horse stopped afk training for no reason.  carrots have less stamina when the oasis event ended.  etc.  i wanted to train all my characters to professional so they could use sprint but i gave up.  too many bugs.  wonder if i'm the only one with training problems.

No, others have experienced this, too. Make sure your looped training path has very few curves/obstacles in between. Especially the turning process has a higher probability of the horse getting stuck at some point so the turning path should be clear. Observe one round of training before you afk if all looks gucchi.

Also your PC needs to provide stable resources and connection for the game while minimized so it should not go into deep hibernation mode or have other tasks such as all those stupid updates of all those stupid apps interfere with the thing you actually want the system to do (which is to run bdo).