OS: Windows 10
GPU: AMD 390X 8gb, latest drivers
CPU+RAM: i7-5820k, 32gb Ram
I'm using the benchmark file from Gooseberry and when default rendering with denoise on the black boxes appear at random when denoise kicks in. But it only appears when rendering with '.exr' file as environmental texture. If I convert the same file to '.hdr' file then the boxes are gone. No visual difference noted except for the black boxes.