One of the caveats mentioned about using data expressions in a dashboard is that performance can be impacted depending on the size of the data, particularly in the sense of the number of records, though the number of records and perhaps the type and length of data fields probably comes into play at some point. What is thought to be 'too much' data to handle with a data expression? Has anyone played with putting a value on the number of records that can be handled through a data expression without compromising the performance of a dashboard?
