Hmm, I get your point, guess I have to deal with it then. But since I started using 2.0 this started to notice this behaviour so I'm wondering if you did some changes that's causing this now.
Lowering the refresh rate in a certain timeframe wouldn't be that good I think, best would still be to refresh IR once the cam is released as stated before. But I don't suppose you will insert a checkbox for that :)