Viewport Performance Question imac 5k

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1

Hey!

Recently i picked up a Late 2015 imac 27 inch 5k Machine.

Details:

  • 4.0GHz quad-core Intel Core i7, Turbo Boost up to 4.2GHz
  • 16GB 1867MHz DDR3 SDRAM
  • AMD Radeon R9 M390 with 2GB video memory

I installed blender and i am seeing some very weird view port performance issues.

When grabbing /moving/scaling /rotating objects as simple as a cube i am getting very laggy movements.

Does anyone know how i can solve this issue?

Any help is appreciated!

Thank you

2

Hi, even iMacs using laptop parts and performance is only 50% of a desktop system a M390 should run such simple files smooth.
Check different Selection and Window Draw Methode in User Preferences > System
Check if you have the latest driver for your card.

Cheers, mib
EDIT: Blender 2.78c is ready next days, check this too.

3

Ensure you do not have snapping enabled (magnet icon on 3d view header)

4

Hey!

Thank you guys for the suggestions!

So to answer a few questions:

Mib2berlin
I have tried the different drawing methods but while one of them makes grabbing scaling and rotating work smoothly, it also makes the zooming panning and rotating the viewport slow.
I have yet to find a good combination of making both smooth.
Hopefully the new version helps the issue.

Richard Marklew:
I have Made sure that the snapping is not on.

Thanks again for the suggestions !