Прежде всего в такой ситуации рекомендуется выставить настройки качества графики на минимальные значения. Если не помогает, то пройдите по пути:
%appdata%\..\LocalLow\Colossal Order\Cities Skylines II\Settings.coc
Там найдите и откройте файл Settings.coc, открыть можно любым текстовым редактором, сойдет и стандартный Блокнот. Вам нужно добавить такой текст в конец докмента:
Graphics Settings
{
"qualitySettings": [
{
"enabled": true,
"upscaleFilter": "EdgeAdaptiveScaling",
"minScale": 0.5,
"@type": "Game.Settings.DynamicResolutionScaleSettings"
},
{
"antiAliasingMethod": "None",
"smaaQuality": "Low",
"outlinesMSAA": "None",
"@type": "Game.Settings.AntiAliasingQualitySettings"
},
{
"volumetricCloudsEnabled": false,
"distanceCloudsEnabled": false,
"volumetricCloudsShadows": false,
"distanceCloudsShadows": false,
"@type": "Game.Settings.CloudsQualitySettings"
},
{
"enabled": false,
"@type": "Game.Settings.FogQualitySettings"
},
{
"enabled": false,
"budget": 0.166,
"resolutionDepthRatio": 0.666,
"@type": "Game.Settings.VolumetricsQualitySettings"
},
{
"enabled": false,
"@type": "Game.Settings.SSAOQualitySettings"
},
{
"enabled": false,
"raySteps": 16,
"denoiserRadius": 0.75,
"halfResolutionPass": true,
"@type": "Game.Settings.SSGIQualitySettings"
},
{
"enabled": false,
"maxRaySteps": 32,
"@type": "Game.Settings.SSRQualitySettings"
},
{
"enabled": false,
"nearSampleCount": 3,
"nearMaxRadius": 2,
"farSampleCount": 4,
"farMaxRadius": 5,
"highQualityFiltering": false,
"@type": "Game.Settings.DepthOfFieldQualitySettings"
},
{
"enabled": false,
"@type": "Game.Settings.MotionBlurQualitySettings"
},
{
"enabled": false,
"@type": "Game.Settings.ShadowsQualitySettings"
},
{
"finalTessellation": 3,
"targetPatchSize": 24,
"@type": "Game.Settings.TerrainQualitySettings"
},
{
"waterflow": false,
"maxTessellationFactor": 2,
"@type": "Game.Settings.WaterQualitySettings"
},
{
"levelOfDetail": 0.25,
"lodCrossFade": false,
"maxLightCount": 1024,
"meshMemoryBudget": 256,
"strictMeshMemory": true,
"@type": "Game.Settings.LevelOfDetailQualitySettings"
},
{
"maxBoneInfuence": "TwoBones",
"@type": "Game.Settings.AnimationQualitySettings"
},
{
"mipbias": 3,
"filterMode": "Bilinear",
"@type": "Game.Settings.TextureQualitySettings"
}
],
"resolution": {
"width": 1440,
"height": 900
},
"cursorMode": "Free",
"depthOfFieldMode": "Disabled"
}
Сохраните внесенные изменения и закройте файл, проблема должна решиться.