Ley Line freezing bug

[Moosey Fate]

When an entity on my team who can cast mage spells is on or adjacent to a ley line, the whole game gets insanely laggy (basically freezing up), and i am lucky if i can click to move them off. I certainly can't get them to move off where I want them to. But this time I can't even move them off. It doesn't matter if I can view the ley lines or not. It's so bad I just don't play mage or take them with me. When it freezes a spirit, i could just unsummon it. But REALLY bad in a tactical game to not be able to control like this. However, in Dragonfall (only on the first mission, and stuck by this lag from the NPC on your team, and can't get him to move at all).

It's the type of freezing up like a window not responding for ~5-10 seconds. But if you try to move the mouse to a place they could walk to, the moment the mouse moves one pixel... it repeats the freeze. It's now locked me up so i basically could only proceed by ending turn without taking that person actions. But really, if that's the case... i'm not continuing. This frustrated me all through Returns. And now it's still going on. Is there any graphic setting to disable or anything that can be done to stop this frustrating constant bug issue?