The Optimization the Kakao worked out didn't port over on transfer.

Currently Gyfin Rysia is a laggy, chunky mess. 

We did a 1 hour grind there last night. Everyone was lagging very badly. It got so bad we had to leave because it was too stressful to do combat as it was. The rest of the game has this issue in various places, too. There's a black wall as you ride in from Hexe to Giants out towards the roadway heading to Red Orcs that disappears as you ride towards it. 

All the optimization Kakao worked out didn't seem to port over on transfer to Pearl's servers. If they still have it I'd go get that and put it back. Whatever they did worked.