PS2 won't solve unless the scale is just right and the hints are very close. After a successful ANSVR solve, check the scale it reports and make sure it matches the scale you have for the camera in your equipment profile.
Typically if the target is completely out of my image frame, PS2 won't solve it. However, I always have PS2 as the primary and ANSVR as the failover. If my GOTO alignment isn't great (and I don't put a lot of effort into making it great) PS2 will fail on the first image, but will solve on the next one after the fine slew.
When PS2 solves, it solves almost instantly. That's why I keep it as the primary. ANSVR can take as much as 10 seconds (still great, but not "instant") so for me the optimal setup is to use both. I have found that if PS2 doesn't solve instantly, it won't solve at all. It can take it some time to go through all of the regions, only to fail in the end. So, I set the max regions to 100. This forces PS2 to fail very quickly when it is destined to fail anyway.
Tim