First off, this is a guide I am using from the Steam community, linked here: http://steamcommunity.com/sharedfiles/filedetails/?id=201468091 but I've heard many complaints that a few steps are redundant or confusing, so I'm rewriting it in my own words because I tried this myself, and it solved all my problems for both my brother and my friend who had this issue. They both have amazing gaming rigs, and one of them had 5 FPS at all times, the other had less than 15 even at zoom x4. Hopefully this fixes your problem! Be sure to follow each step carefully, and if you have any issues, just quote me (I sometimes don't check every reply; sorry! I check all quotes though) and I'll get back to you! Close the game and quit Steam. Go to your Steam folder (example: C:\Program Files (x86)Steam), right click on steam.exe, go to Properties, and select the Compatibility tab. Make sure EVERY SINGLE checkbox is unchecked. This includes the Run as Admin checkbox. Hit OK to save the settings. Assuming you have Windows 7, click the Start button and type "regedit" without quotes and hit enter to open RegEdit. If you have Windows XP, open the start menu and click "Run..." and type "regedit" and hit enter. If you have Windows 8, I'm sure you can figure something similar out, because I'm not exactly sure. HKEY_CURRENT_USER\Software\Microsoft\WindowsNT\CurrentVersion\AppCompatFlags\Layers and delete any entry with a path related to Steam. If there are none, that's okay, continue to the next step. Repeat the last step with HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers (which is the exact same path, only HKEY_LOCAL_MACHINES instead of CURRENT_USERS). Repeat step 2 to confirm Steam has no compatibility options enabled. Launch Steam and play Starbound! If this helped you, please let me know! If it didn't, please include the specs of your computer below so the developers and I have more information when we try and help you! NOTE: This is a fix for a specific issue regarding low FPS. There are multiple issues out there causing the same thing, and this only fixes one of them, so if it doesn't help with your computer, I'm very sorry. There are a lot of people digging around and doing work to try and fix all of these issues. They'll get around to you, don't worry.