I tend to use DSR for older and less demanding jrpg games due to the fact that I am running a GTX 960. I can achieve a very solid 60 fps on Valkyria Chronicles with a ~3300 x 2300 resolution (4K DSR is feasible, though drops below 60 fps when explosions are happening, may try memory OC). Though vastly overkill for a 768P tv, the complete lack of aliasing in gameplay is quite wonderful. I really dig it especially with the NPR (non-photorealistic) style of the game.
Well with games like that, it's even MORE recommended to use some form of super sampling. It's like playing Dolphin emulator and not using at LEAST 4x IR resolution (I use 5-6 minimum sometimes 8).
Ya, it's amazing how older games like that are cleaned up and look REALLY nice.
That's a game I need to get next, I need to finish my last level of Fire Emblem and move on lol.
Edit: Looks like 60% of Nvidia users here use DSR compared to 75% of AMD owners.
Maybe that will change when new GPUs come out that can even brute force through older games even harder. I know I'll be pushing people to use it and hope Nvidia/AMD improve on the features. That 8k downsampling dream will some day be a reality....
Still annoys me that AMD pushed 8k screenshots of games before Fiji release only to then not even have a way of making 8k downsampling possible. Amateurish...