Special Attacks

i think it's not a good idea to use special attacks beyond the number they warn you to stay away from:
Even if appearently it doesn't happen anything, eventually some glitch can happen... 
especially if the battle is long and the monster has many opportunities to use it.
Gi Nattak knows something about it, actually that's also my case since i had to change Ultimate Czar Dragon's special animation:
after an hour or something of fight it suddenly glitched and the outcome was kinda unpleasant.

Good to know, but what is the number specified? How high should I go?