Slicer cause wrong average calculations

Hi All,

I have a problem regarding my slicer. We have X amount of Sales Teams, where each sales rep is being measuered on average visits per day and average time spent. The average caluclations functions when you do not apply the sales team filter as shown below:

But as soon as you apply a filter, the average calculations gives a wrong output. (see below)

Does anybody have any ideas to resolve such?

Thank you in advance.

Best,