There is a simple way to reproduce an issue in Garry's Mod (no addons) which renders all reflective objects (even with reflections turned off in the game settings) to appear as missing textures. Here's a GitHub thread with all the evidence (a video, screenshots) and testing results from multiple participants who were also using AMD GPUs/APUs. Again, this issue is only present on AMD graphics hardware (NVidia and Intel got negative results from testing).
P.S. I did try to test the game with DXVK from GitHub and it seemed to have "fixed" the issue, but the game becomes unstable in Vulkan - shows graphical artifacts when Alt-Tabbing a lot of the time, performance while similar, CPU has to work harder for the transition-layer to work. Overall, it's not an ideal solution by a long shot, but it goes to show that this "bug" here has something to do with relations between AMD and DirectX
