How long does it take to generate a report?

HI, 

Just out of curiosity, how long does it take for the user to generate a pdf report?

I have the following infra, all in an Azure wab gui  

Task → insert data in rpt_queue/rpt_data -→ calls a .rdl file. Saves files on the disk. 

A homemade service picks the file up, uploads to Azure File Storage, and returns a uri to the file. → The file is nicely displayed in the previewer. 

All works well, but the time between clicking the Task and actually seeing the File is somewhere around 50s to a minute. 

Our client thinks this is way too long. I’m not sure if this can be improved, but perhaps I have a delay somewhere. 

So; What is a reasonable time for generating a file?

Thanks!