Well if you're lvl 70-79 , I gave an exemple if you wanna farm CA- or copy eod ( now copy eod is **** but In FR-GR-ITA serveur we're steel in ep4-5 )
Complête some quest for the nation ( lvl 52 quest Nation ask you to go in DG , your xp lost is around 30-40k xp )
Go in , select char , re-go in , slect char etc etc...
do that x 10 = 300.000-400.000 xp lost
Have fun ( that how ALL CAN COMPLETE lot of copy eod in EU EP5 )