When i was married in another south east asian country and it took them so long to process the application i had a meeting with
the vice council at the embassy and thats what he informed me
He even showed me the "settlement" visa appointment book and said we are only allowed to process a limited amount every month
This was a few years back though maybe things have changed since then
After i was married it took me six months before they would grant her a entry visa
no problems with the application as well