Do we need to match GPU Scaling Modes with Monitor OSD Scaling Settings at Native Resolution?

[Quajila]

This post is explicitly about behavior at Native Resolution.

AMD and NVIDIA GPUs use different names for their respective scaling modes, but they translate directly to each other:

• Preserve Aspect Ratio (AMD) = Aspect Ratio (NVIDIA)
• Full Panel (AMD) = Full Screen (NVIDIA)
• Center (AMD) = No Scaling (NVIDIA)

Most monitor OSD menus use the following scaling configurations: Aspect/16:9, Full/Wide, and 1:1/Pixelmapping.

Speaking about Native Resolution specifically, the GPU scaling modes are technically supposed to do absolutely nothing, just like common advice states, but they still clearly alter the presentation. Across both AMD and NVIDIA GPUs, I’ve observed the same distinct results:

• Preserve Aspect Ratio / Aspect Ratio: Both seem to stretch the native image vertically a little bit. It makes the mouse input feel slow or “muddy,” and makes the game FOV look flatter or compressed.
• Full Panel / Full Screen: Both seem to stretch the native image horizontally a little bit. It makes the mouse input feel faster, and also makes the game FOV look a bit flat and lowered.
• Center / No Scaling: Both make the image look perfectly crisp with zero stretching in any direction. The mouse input feels completely “raw,” the game FOV looks normal/correct, and the image looks like it’s “just placed” on the panel as if there is no background processing going on.

At Native Resolution, I’ve also found that the monitor's built-in scaling settings still change the overall feel. A few years ago, I tested a display with access to all three monitor modes. I found that forcing 1:1 / Pixelmapping and setting the GPU to Center made my mouse input and game feel the absolute rawest.

I also experimented with matching the monitor's OSD settings directly with the GPU scaling modes to create unified pipelines. For example:

• GPU Aspect Ratio paired with Monitor Aspect/16:9
• GPU Full Screen paired with Monitor Full/Wide
• GPU No Scaling paired with Monitor 1:1/Pixelmapping

I tried matching them perfectly like listed above, and I tried mixing them around. When matching them, I found that the Center/No Scaling + 1:1 path felt the most “stale” or completely sterile. Mixing them around (mismatched states) caused my mouse input to feel a bit “wonky” or slightly desynchronized. Currently, I am running an NVIDIA GPU using No Scaling in the NVCP paired with Full on my monitor. It feels very snappy, but it still maintains that slightly "wonky" or accelerated texture.

My question is: Do we technically need to match the monitor's scaling settings with the GPU's scaling mode to ensure a clean handshake?

When looking at what professional players use, a vast majority have their NVCP set to Full Screen and their monitor set to Full. This is usually because they run stretched resolutions in games or they alternate between stretched and native, leaving it on Full out of habit. Either way, it accidentally creates a "perfect scaling path match." The same applies to casual players who use stretched res. The point here isn’t about which specific setting is superior, but rather the clear pattern of the scaling paths being perfectly matched between the driver and the display hardware.

If you want to test how different GPU scaling modes change things at Native Resolution, here is the easiest replication test I've come up with:

• Go into a game you are highly familiar with.
• Load into an empty map or a practice mode arena.
• Stand in a specific spot you can easily replicate and keep your mouse completely still.
• Pay close attention to how your FOV looks, how your weapon model looks, and how objects at the corners, edges, and the center of your screen appear.
• Once you have fully registered the visual state, close the game.
• Change your GPU scaling mode to a different profile in your driver panel.
• Boot back into the exact same game and stand in the identical spot.

If you’re sensitive enough to perceive these sub-millisecond timing and presentation changes, you should be able to clearly see and feel exactly how the layout transforms.

[RealNC]

Speaking about Native Resolution specifically, the GPU scaling modes are technically supposed to do absolutely nothing, just like common advice states, but they still clearly alter the presentation. Across both AMD and NVIDIA GPUs, I’ve observed the same distinct results:

• Preserve Aspect Ratio / Aspect Ratio: Both seem to stretch the native image vertically a little bit. It makes the mouse input feel slow or “muddy,” and makes the game FOV look flatter or compressed.
• Full Panel / Full Screen: Both seem to stretch the native image horizontally a little bit. It makes the mouse input feel faster, and also makes the game FOV look a bit flat and lowered.
• Center / No Scaling: Both make the image look perfectly crisp with zero stretching in any direction. The mouse input feels completely “raw,” the game FOV looks normal/correct, and the image looks like it’s “just placed” on the panel as if there is no background processing going on.

Are you saying that on your system you get part of the image cut off? Because when stretching the image, the outer parts of it would get lost. I have never observed anything like this. On my 2560x1440 screen, if I make an image of that resolution that is black but only the outer pixels are white (so a 1-pixel wide rectangle), I can always see it.