Hello, I'm a new mapper with big dreams and small skills - however this is an issue I cannot wrap my mind around. Basically, any compile, doesn't matter if it's fast, normal, or even a final HDR compile, takes place in an expected timeframe. Fast is a few seconds, normal is a minute, final HDR is around 3-5 minutes. As I reach the phase where I personally believe the only thing left to do is a little bit of patchwork/polishing, I decided to finally do the skybox. And well - this is where things start to go apart. A fast compile of the map with the 3d skybox works completely fine and takes - if anything - a few seconds longer. Yet an HDR compile is seemingly infinite. Something must be wrong... Which is why I'm here. I just tested it again and I still can't find the bloody issue. Do 3d skyboxes, even with nothing major in 'em, just have a gigantic impact on compile time, or is there something different going on?