Some problems, but I don't know if it is REALLY a problem or just the build itself...

I think that something strange is happening. See below:
Everytime I close the game, it lost all setup made, except the graphics. It is veeery annoying, mainly because I changed everything in Interface options.
Game in medium/low settings, but Im with a 7/10 fps in the beginning of the game. I use a 570GTX 4Gb DDR2 and a Q6600 Quad Core 2,6Ghz. Sometimes it just goes to 60fps for no reason and backs to 7/10fps.
Cant change the Solar System. I created 3 different solar Systems, but I cant hit the LOAD button. It is always unavailable. I can change the planet to another one, but it dont brings the moon together.
It happens with you guys?
=\

First make sure that you have latest drivers from Nvidia website.

Then try those workarounds:
http://steamcommunity.com/app/233250/discussions/2/864980734977925162/
Also check what FPS is with non-Steam client:
https://store.uberent.com/Download/Install?titleId=4

There is two limits currently:

• You can't use lava planets.
• You can't use planets with radius larger than 1200 meters.

Follow them and you'll able to load your systems.

Thanks bro. I got a 18~ in the beginning now. =\
Not the improvement that I wanted, but enough to play. Thread Optimization was the option that I turned on. Yet, I dont understand why it is running so slow. There are plenty of users with machines very weaker than mine with better frame rates.

Anyway, I'll keep trying.