I have problems with Viveza and Silver Efex will not launch from Lightroom Classic. They only work in Photoshop. Those are the two apps that were upgraded in Nik 4. I have windows. Cannot find solution.
I wish I could help but I am just another user of Nik Collection. I am on a Mac and I am a lightweight user of my Wacom tablet. I can only say that on the Mac I can drag the sliders using the Wacom stylus. I do not use Lightroom or Photoshop. And, use both Viveza and Silver Efex from Affinity Photo. I have other difficulties with the changes made to Silver Efex Pro and Viveza. And, regret having made the upgrade to Nik Collection 4. The folks at DxO are the only ones who I feel can address the problems.
Peace
Marvin