When rendering any 3D layer, objects are distorted. I had the same issue with PS 2020. I do not have this issue with PS 2019 and am having to revert back to that version whenever I want to render 3D images.
Photoshop 2020 (22.0)
macOS Catalina (10.15.7)
MacBook Pro (16-inch, 2019)
2.3 GHz 8-Core Intel Core i9
16 GB 2667 MHz DDR4
AMD Radeon Pro 5500M 4 GB
Intel UHD Graphics 630 1536 MB