When i try to preview any navigation file which has many structuregroups in the publication , it results in gateway time our error.
I have run a Fiddler trace and found that any response which is taking more than 59 seconds is resulting in Gateway timeout errors.
This happens also while publishing,listing,rendering etc.
/WebUI/Models/TCM54/Services/Rendering.svc/Preview failed to execute. STATUS (504): Gateway Time-out
I have verified all my configuration files and they seem to be updated with proper timings.