Virtual Key Figures

Hi experts,

I know that the virtual key figure is an info object which is defined in the info provider as a meta data without having any physical data. So, the data is calculated at query run time. On the other side, there are calculated key figures which derives data based on calculations defined within them.

My question is if the VKF derives the data at query run time, then which key figure (virtual or calculated) will impact the query performance time ? or Which key figure will yield the maximum query performance ?

Any input will be highly appreciated.

Regards,

F T