Speedproblem when using i2c and LCD with a stepper

Projects Networking, Protocols, and Devices
1

Hi all,
i'm using a pololu A4988 stepper driver and i want to use a 16/2 LCD to display some information. However, the moment i use the wire and the LiquidCrystal_I2C libraries i get a delay between steps that renders the motor about 10 times slower than without. Any idea on what might be wrong and how to correct it?
I'm running this on a Duemilanove.

Cheers
Björn

2

As usual, once i ask i find the answer myself:)
Just keeping track of changes that need to be displayed and only using any of the lcd functionality when neccesary and not on every loop works a treat.
Cheers
Björn