Please provide option to stop refreshing dataset after refreshing manually... If there are any performance issues in database this would lock down the table... I even observed that reports doesnt ...
'Additionally, it would seem very very useful to have - a more general "stop all automatic calculations" option - an ad-hoc "compute now" buttom to allow a user to enter the DAX for multuiple new computed measures / columns etc. The user coud then either signal to the system either : a) press the "compute now" button OR b) change the general setting back to "automatically compute" etc
