So I am experiencing the following problem for the first time - on my work rig I have a single gtx 1080 which is 8gbs of VRAM. On my current project ( I work with CAD files don't be supriced of the size) I have hit a vram limitation at 4,7gb.
Now, before being asked - I have nothing else opened other than Chrome and Spotify as I took this screencap. Yes, I have already tuned the render settings for light paths. The only thing I could think of being problematic is the HDRi I use for lighting, so I'll change it. First trying to reduce the "Map Resolution" did nothing, same as before, same vram usage.
Now I changed it from a 4k HDRi to a 1k HDRi. Only difference is in -40mb vram. Can anyone give me advice on how to fix this? I have a TitanX I can test this scene on, however I wish to use my 1070s to render it faster.