Hullo,

I'm trying to build a Katana layout to introduce Lighters to Houdini, and I've noticed a couple issues.
On build 16.5.378 there is no scene view lag/freezing when looking through lights or camera, with the IPR window
running. On the latest build, 16.5.439 and .448, the lag is terrible. When looking through the camera
it is even worse. So something has changed between builds.

The other thing, is that shader tweaks, lighting tweaks, and light position adjustments trigger an almost
instant re-render in IPR, camera position changes are a good second of waiting before it triggers.
I know it's usually lights, and blockers that get moved more often, but the camera update lag is pretty
annoying. This happens on both 16.5.378 and 16.5.439,.448.

So, why is the camera update causing such bad performance?

Cheers

Lewie