Arcthrower discussion

I LOVE this weapon. I can use it effectively on all 3 fronts. You can hold down an entire bug breach minus a titan, lock down a bot patrol, lock down any group of enemies on any front.

But God what is with this gun sometimes? It just won't register a hit sometimes with a clear line of sight. If there's the slightest debris or elevation change you're just shooting air. It doesn't happen enough for me to stop using it but man it's frustrating when it does.

Is this a bug or is any obstacle (im talking a tiny rock formation or piece of metal) supposed to interfere? Any tips on mitigating this?