Again... if you post Arduino output pin voltages ..may be i can help you solve?.. okay, just tell if you have any resisters/led at output pins of arduino between lcd and arduino?
try to add delay between the refresh rate of lcd.
Again... if you post Arduino output pin voltages ..may be i can help you solve?.. okay, just tell if you have any resisters/led at output pins of arduino between lcd and arduino?
try to add delay between the refresh rate of lcd.