It may not even be called Touchwiz anymore. But I recall noticeable lag back in the day on an S3. Since the hardware has improved massively over time then perhaps this has changed. Read somewhere that Samsung devices need 6 gb of ram in order to overcome the heavy software skin. Just wondering what people's experiences are with S8 and S9 devices. They sure sell well, but I am sensitive to lag and would not want a device if it is not snappy like a Oneplus or Pixel.