PerBonomi - I faced the same issue with roles clause. After assigning a new role to user, API V2 was talking too much time. In my case even it was taking one day to reflect in API v2. Got it fixed from lithium support. Meanwhile you can use API v1 for your code.
Thanks for the assist. Do you feel it was a permanent fix? Or a temporary cache clearing?
Not permanent, but I didn't notice that issue after that for that particular call. Just to give you more insight, they have done following things.
1. Reset the indexing
2. Restarted the server
