I only see in Pixar Storm renderer.
How can I fix this issue?
The Omniverse viewport requires an RTX-capable GPU to function as it leverages the RT cores and Tensor Cores found on RTX hardware. The 1080ti is a GTX card that does not have this hardware capability. You would need a GPU branded as RTX which would be a 20 series or up but we recommend an RTX 3070 and up. Technical Requirements — Omniverse USD Composer documentation (nvidia.com)