Kyle2k,

For an NVidia card and assuming your OS is set up the same as mine:

1. Right-click on the desktop and choose "NVidia control panel"
2. Under "3D Settings" on the left, select "Manage 3D settings", then select "Program settings" among the tabs on the right
3. Next press "Add" and then wait for a while until the "Select a program" window appears
4. Click "Browse" and then select the location of the "javaw.exe" file (mine is in the "runtime\bin" folder of the Sweet Home 3D installation location); you may need to search for that file though.
5. Click "Open" to close that window.
6. Under "2." of "Program settings", choose "High-performance NVIDIA processor"
   You should now have much faster 3D refresh rate.
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Hi there! I use NVidia Geforce GTX 1660, and the red line is no where to be found on my NVidia Control Panel. Could you please help me?