Is a Slow Viewport Normal?

[msoon2k]

Hi guys,

I'm on the edge of purchasing Octane here but there is one thing holding me back.

Is it normal to have a super laggy viewport? I've downloaded the test scenes and most of them are pretty fast/smooth to navigate except the "hallway" scene. When the render kicks into action, everything on my computer slows to a crawl.

Is there a way to put less priority on the render and more into my system resources? Right now, when I switch tabs to web browse, my entire system starts to freeze up. When navigating the hallway scene, it's incredibly slow and painful to move around the scene as well. I must be missing some sorta setting here.

I've tried the 3 little priority render buttons just below the render viewport but they don't seem to affect things that much.

My machine specs:

OS X Mavericks
iMac 27" + Nvidia GTX 780m 4gigs ram

Cheers!

Mark

[kavorka]

It sounds like you are using your display card as a render card.

In your preferences, in the CUDA tab, make sure "use priority is selected for the display card, otherwise the priority button won't do anything.
Also, if you have multiple CUDA cards, deselect your display card so that isnt used in Octane. If you have a dedicated card for display, you will have no lag in any scene. Priority works really well but it isnt perfect.

[bepeg4d]

hi, you need to assign the Iris Graphics only for display and the 780M only for Octane.
I have successfully used this utility on a Mac Book Pro Retina:
https://gfx.io
never try with an iMac but should be exactly the same

[msoon2k]

I wish I had an Iris card as a secondary, but I don't on my iMac 2013 27"

[heartlessphil]

checking the ''low priority'' did the trick for me...I dunno why it was unticked, but it took me some days to figure out why Octane for 3ds max was getting my computer to run so slowly, crash and even my to restart. Low priority for the win!!!

I have a GTX 670!