SLI noob here.....I thought when you activate SLI in nVidia's control panel then that was it...everything worked perfectly. I was severely mistaken 😉

I've heard to get the best SLI experience you need something called "GeForce 3D Settings Profile Manager" (thanks TrashBytes). I think you used to be able to download it at https://github.com/tutyamxx/NVIDIA_Profile_Manager/releases but the link no longer exists. Was the software shutdown by nVidia / absorbed into something nVidia released?

I'm trying to get SLI working with 3dmark06. Once I've got that working I'll then try to get Doom 3 working with SLI.

Any tips or advice would be greatly appreciated.