The XP tick seems pretty hit and miss. I've been wailing on one for close to 12 minutes w/ 2 apr and gotten about 30 XP at level 5
Sometimes the ticks roll in from consecutive hits, others I'll go quite a few rounds without seeing xp at all. I've messed around w/ trying to alternate dummies, dualwielding vs 1h, but it seems mostly random/irregular?
More of a suggestion, but They've also apparently got a TON of hp. I've easily done somewhere between 300-500 damage without destroying it in this time. If this is meant to be a safer / less supply rewarding means for lowbies to level or recover levels.. It seems very unworth the time atm.
Sounds like it's working fine. The XP is consistent at levels 1-4, and then highly randomized later.
It's not intended as an alternate for questing. It's just something small - a minor bonus, perhaps, for when you're waiting around to find other kinds of interaction.