I suggest that in Game Options they put:
Change quality (very low, low and normal):
If you choose low or very low, the game will lose quality and will be more blurred, but it will decrease the lag and increase the speed of the game. If you choose normal, it will look like normally.
Decrease the drawing distance:
It is used to decrease the amount of the map that was loaded, thanks to this we will not have lag
Eliminate lights:
This will eliminate all the lights of the game, it will serve to eliminate the lag and have a darker environment
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These options will allow GraalOnline Era to be enjoyed on PC with few resources and "PC gamer" players will also have great speed and comfort.