Disabled MSAA on the color pyramid

com.unity.render-pipelines.high-definition/HDRP/RenderPipeline/HDRenderPipeline.cs

             m_NormalBufferManager.InitNormalBuffers(m_GbufferManager, m_Asset.renderPipelineSettings);
 
             m_CameraColorBuffer = RTHandles.Alloc(Vector2.one, filterMode: FilterMode.Point, colorFormat: RenderTextureFormat.ARGBHalf, sRGB: false, enableRandomWrite: true, enableMSAA: true, useMipMap: false, name: "CameraColor");
-            m_CameraColorBufferMipChain = RTHandles.Alloc(Vector2.one, filterMode: FilterMode.Point, colorFormat: RenderTextureFormat.ARGBHalf, sRGB: false, enableRandomWrite: true, enableMSAA: true, useMipMap: true, autoGenerateMips: false, name: "CameraColorBufferMipChain");
+            m_CameraColorBufferMipChain = RTHandles.Alloc(Vector2.one, filterMode: FilterMode.Point, colorFormat: RenderTextureFormat.ARGBHalf, sRGB: false, enableRandomWrite: true, enableMSAA: false, useMipMap: true, autoGenerateMips: false, name: "CameraColorBufferMipChain");
             m_CameraSssDiffuseLightingBuffer = RTHandles.Alloc(Vector2.one, filterMode: FilterMode.Point, colorFormat: RenderTextureFormat.RGB111110Float, sRGB: false, enableRandomWrite: true, enableMSAA: true, name: "CameraSSSDiffuseLighting");
 
             m_CameraDepthStencilBuffer = RTHandles.Alloc(Vector2.one, depthBufferBits: DepthBits.Depth32, colorFormat: RenderTextureFormat.Depth, filterMode: FilterMode.Point, bindTextureMS: true, enableMSAA: true, name: "CameraDepthStencil");