SIN bad performace, low fps, laggy gameplay

[Chriss]

This performance issue can occur with newer GFX-Cards, supporting OpenGl 4.0 and newer, its is most common on Windows Vista and Windows 7.

How to fix:
Renaming the sin.exe into quake3.exe will solve that issue. Since SIN is based on the quake3 engine and is using the same or a similar OpenGl version the GFX-Card driver will handle the game correctly when it thinks that it is quake3.

Please Note:
You have to rename the executable file exactly, to quake3.exe, it should not be named quake3.exe.exe. If you only read the name "sin" at your SIN executable, then rename the file to "quake3" only. If you have it done correctly, then the renamed executable should still show the SIN triangle icon.

For more informations please read the originating thread.