HELP!!! I NEED HELP TO FIX A PROBLEM WITH MH 1 JP

when im playing monster hunter 1 jp version , when i try to do the urgent mission from the glypceros the server kicks me to lobby in some random point of the hunt , its happening always on this quest and i cant keep the prog if i cant beat this guy because of the kicks!!, im emulating in pcsx2 , i touched some of the graphics setting in the emulator , any help? do you guys think i should put the graphics on default????