Currently, DataViz charts allow you to set a valueAxis's tick mark increments (increments of 100 would give you 0, 100, 200, 300, etc). I suggest a way to set a specific amount of ticks that your chart will always load, and the data will use divisions to fit the tick amount you set. Example: I want my chart to always display 5 ticks. I have two users, one who has a max number of 100 and the other has a max of 500. For User 1, the chart would set a max of 100 divided by the 5 ticks (so increments of 20). User 2 would get increments of 100 to fit the 5 ticks.