Hello Community

I am currently working on debugging a slow “preview document” response and am not sure where to look for a root cause.

I have a development server running on Azure and an acceptance server running locally on IIS. 

The azure response time is like 6 seconds while the IIS takes a minute. I am currently considering the following root causes:

• Some IIS setting is not set/optimalised 
• The machine the IIS is running on is not powerfull enough
• Some firewall is scanning the document 

I am however struggling to pinpoint the issue since the indicium and iis logs (inetpub → logs) dont show anything. Do you have any ideas?