I have two computers, an older one with a dual-core Intel processor, 8GB RAM and a GTX870 GPU (2GB) and a newer one with an eight-core AMD processor, 32GB RAM and a GTX960 GPU (4GB) RAM.
Sadly, both machines behave similiarly badly as far as previewing animations in the viewport is concerned (even using Solid view). I can hardly ever get above 10 fps. More often than not it’s actually below 5 fps…
And I am talking really simple animations here: The one I’m currently working on is just a bunch of text objects being moved, scaled and rotated in front of a fixed camera in sync to an audio track (at least that’s the plan - which is really hard to do without being able to do a proper realtime preview)… The text objects are neither extruded nor do they have any subsurf modifiers applied to them.
I used to think the poor performance was maybe due to the low processor power of the old computer which is why I bought the new machine in the first place. However, as far as Blender is concerned, the beefier hardware makes almost no perceivable difference at all.
Any ideas what I could be doing wrong? What kind of additional info would you need?