[Docs]NoiseCancellation docs to mention performance needs (#378)

docusaurus/docs/iOS/03-guides/04-noise-cancellation.mdx

@@ -48,14 +48,24 @@ Once you are able to create a `NoiseCancellationFilter` you can rely on `Call`'s
 - `.available`
 The featue has been enabled on the dashboard and it's available for the call. In this case, you are free to present any noise cancellation toggle UI in your application.
 
+:::important
+Even though the feature may be enabled for your call, you should note that NoiseCancellation is a very performance-heavy process. For that reason, it's recommended to only allow the feature on devices that support Apple's neuralEngine. 
+
+You can easily check if the current device has neuralEngine support by using `StreamVideo.isHardwareAccelerationAvailable` on your streamVideo initialized instance.
+
+For more info you can refer to our [UI docs](../../ui-cookbook/noise-cancellation). about Noise Cancellation.
+:::
+
 - `.disabled`
 The feature hasn't been enabled on the dashboard or the feature isn't available for the call. In this case, you should hide any noise cancellation toggle UI in your application.
 
 - `.autoOn`
 Similar to `.available` with the difference that if possible, the StreamVideo SDK will enable the filter automatically, when the user join the call.
 
 :::note
-You will need to ensure that you have provided a `VideoConfig.noiseCancellationFilter` value when you initialise StreamVideo, in order for the `.autoOn` mode to work properly.
+The requirements for `.autoOn` to work properly are:
+- A `VideoConfig.noiseCancellationFilter` value when you initialise StreamVideo
+- Device has support for Apple's neuralEngine
 :::
 
 #### Activate/Deactivate the filter

docusaurus/docs/iOS/05-ui-cookbook/19-noise-cancellation.mdx

@@ -31,7 +31,11 @@ struct NoiseCancellationButtonView: View {
     }
 
     var body: some View {
-        if let call = viewModel.call, let noiseCancellationAudioFilter = streamVideo.videoConfig.noiseCancellationFilter {
+        if 
+            let call = viewModel.call, // Ensure we have an active call.
+            let noiseCancellationAudioFilter = streamVideo.videoConfig.noiseCancellationFilter, // Ensure that we have noiseCancellation audioFilter to activate.
+            streamVideo.isHardwareAccelerationAvailable // Ensure that the device supports Apple's neuralEngine.
+        {
             Group {
                 if isNoiseCancellationAvailable {
                     Button {