Just to add on to what Warrior has mentioned, it may be that y'er computer cannot handle the amount of players found in that map. Sometimes, the map Flourite can get a tad laggy due to a large population in one spot.
Also, what ye can do, is head to y'er user panel (found at the top right corner of the forum) and send y'er characters home. Sending y'er characters home will most likely place them in the Lonely Cave (unless ye 'ave set their home somewhere else in Feral Heart.) With y'er char now in a non-laggy environment, it should run smoothly.
This also usually fixes any crashing ye may 'ave had in Flourite Plains, so take a looksy to see if ye will crash or not. Hope this helps ye deary and I hope to see ye in-game soon. ^3^