Hey there @FearsumEnjinn, thanks for taking the time to get in touch. I am sorry to hear that Smoke's Z9 grenades are not having an effect on Tormentors, I will gladly investigate this further. To help me get a better understanding of the issue itself, could you please provide a short video showing this in action? You could directly upload the clip to an online video-sharing platform like Twitter or YouTube. Alternatively, you can always try uploading it here on the discussions or try sending it to us another way, such as through a file-sharing site.
If you have any further questions or you experience any other issues, please do not hesitate to reach back out.