Theoretically, if I disable vsync in NVCP will it mess up with framepacing even if I am below max Hz?

[GFresha]

Normally, I have no issues enabling G-Sync and V-Sync in the NVCP while turning off V-Sync in the game, especially for single-player games. The smoothness is on another level.

However, my question is when using Lossless Scaling in conjunction with in-game Reflex.

As you guys know, having V-Sync enabled in NVCP causes Reflex to cap your FPS. This usually isn’t a problem, but with Lossless Scaling, I prefer not to exceed my monitor’s maximum refresh rate so G-Sync continues to work effectively. Additionally, there are times when I want to set a lower FPS cap than what Reflex determines—for example, if Reflex caps me at 90 FPS but my FPS fluctuates between 80-90, I’d rather manually cap it at something like 60 FPS before enabling LSFG in Lossless Scaling.

The issue is that this results in two FPS caps: the one from in-game Reflex and my own manual cap. To address this, I’ve considered disabling V-Sync in NVCP. By doing so, I can enable in-game Reflex and still benefit from reduced latency without Reflex capping my FPS. This way, I can set my own FPS cap manually, leaving only one active cap instead of two.

I’m wondering if there are any downsides to this approach. If I keep G-Sync enabled in NVCP and manually cap my FPS while disabling V-Sync in NVCP, will it increase latency or make the game less smooth, even when I’m staying below my monitor’s maximum refresh rate?

Thanks!

[RealNC]

With LSFG, it does not matter whether the game is vsynced or not. LS will be presenting the frames you're seeing, not the game. In fact, g-sync isn't even needed for the game, only for LS itself.

You can run the game in windowed mode, no vsync, no g-sync, and it doesn't matter. Actually I prefer running games with vsync OFF, g-sync OFF with only an FPS cap on them when using LSFG.