Hello!
I recently bought a laptop, hoping to learn how to use Lumion.
I've already tried the free version at my office's PC and everything went perfectly normal (actually it was the main reason I bought the laptop).
The thing is, after installing the newest free version available (3.2, i guess), the first time I started a scene, the sky went all messed up (colors and brightness) and the fps was too low.
So I went to the AMD panel control and assigned Lumion to the dedicated card on the highest performance. Then I started Lumion again and everything went right this time.
The first thing I noticed, since I imported a model and started to work, the fps was not that good, compared to the results I've obtained when I was using Lumion at my office's PC.
Despite of that, i continued working on the scene. But when I was changing the sun height and direction, everything went messed up again, like before! The sky became all shiny and some materials went black...
Can you help me out here? I'm trying to figure out what's happening... I spent a lot of money in this laptop!
And also, why Lumion is working better on my office's PC than at my laptop? My laptop specifications are far better than my office's PC...
Here my specifications for both computers:
LAPTOP:
Processor - Intel Core i7 3610QM
RAM - 16GB 1600MHz (dual channel 8 +

Integrated Graphics - Intel HD Graphics 3000
Dedicated Graphics - AMD 7970M 2GB GDDR5
OS - Windows 8 Pro x64
OFFICE'S PC:
Processor - Intel Core i5 (don't know which one)
RAM - 6GB 1600MHz (four channel - 1 + 1 + 2 + 2)
Dedicated Graphics - GeForce GTX 260
OS - Windows 7 Professional x64 SP1
Thanks in advance!!