Setting depthTestAgainstTerrain=false and viewer.resolutionScale=window.devicePixelRatio; can lead to severe performance issues

[catnuko]

What happened?

When loading any Cesium3DTileset, setting viewer.scene.globe.depthTestAgainstTerrain = false; can cause the GPU to run at full load. If you also set if (Cesium.FeatureDetection.supportsImageRenderingPixelated()) { viewer.resolutionScale = window.devicePixelRatio; }, you may experience Serious performance issues.This issue started with version 1.121.

Reproduction steps

const viewer = new Cesium.Viewer("cesiumContainer");
viewer.scene.debugShowFramesPerSecond = true;

viewer.scene.globe.depthTestAgainstTerrain = false;
if (Cesium.FeatureDetection.supportsImageRenderingPixelated()) {
    viewer.resolutionScale = window.devicePixelRatio;
}

// Set the initial camera view to look at Manhattan
const initialPosition = Cesium.Cartesian3.fromDegrees(
    -74.01881302800248,
    40.69114333714821,
    753,
);
const initialOrientation = new Cesium.HeadingPitchRoll.fromDegrees(
    21.27879878293835,
    -21.34390550872461,
    0.0716951918898415,
);
viewer.scene.camera.setView({
    destination: initialPosition,
    orientation: initialOrientation,
    endTransform: Cesium.Matrix4.IDENTITY,
});

// Load the NYC buildings tileset
const tileset = await Cesium.Cesium3DTileset.fromIonAssetId(75343);
viewer.scene.primitives.add(tileset);

open the sandcastle example and click "open in new window" button

Sandcastle example

https://sandcastle.cesium.com/#c=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

Environment

Browser:Edge
CesiumJS Version:1.124
Operating System:window 10