If you turn off the haze, the performance of your live view will probably be much better. You can put the Capture smokebox on a submaster during plotting. When you need to save a render, you can put your sub up, store your render (that will be full quality, regardless how bad it looks in the live view) and once done, you pull down the sub, to continue building looks.
Haze in combination with multi source led's is challenging. Each led pixel is a single light source that needs to be calculated.