The issue is pretty isolated to NativeScript Angular projects. Regular PAN apps work perfectly in VSCode. I suggest the following settings to optimize your experience in VSCode (or others that come across this thread).
You will want to configure the paths to match your project’s setup. Ideally you don’t need VSCode to traverse and index anything in platforms. The livesyncing causes VSCode to exhaust a lot of resources to figure out all the files in your project’s folder.