SCCM 2012 and collection settings

Hi all,

I am migrating SCCM 2007 to SCCM 2012 SP1 CU3.

All my 1200 collections are migrated to SCCM 2012 and the incremental option is enabled on most of my collections (about 1100).

Now I found out that my collections are updating very very slow.....

I read an article that best practice is to enable a maximum of 200 collections with the incremental option.

So i ran a powershell script to disable this option on my collections....

Now it seems that collection updates are faster again...

Do I need to disable the incremental option on all collections and enable the schedule full update eg. very 30 minutes ?

I hope someone could share his experience with this....