This has probably been posted before but i haven't seen it... try using a speedhack (such as the speedhacking feature on Cheat Engine) combined with glider. I've started doing this over the last few days and noticed that i've been gaining much more XP over much less time. Remember not to make the speed to fast, or else your character will just constantly keep running past monsters and not attack because you will be running too fast for glider to pick them up.
Cheat Engine 5.4 - Cheat Engine
Glider - Glider
Have Fun