Nvidia drivers have broken Quake HD Remix for Pascal users. The game now chugs along at 15 FPS on a Nvidia GTX 1080 whereas before it was a near constant 60 FPS on an Nvidia GTX 970. It seems that Pascal has optimization issues with the Darkplaces Engine if using the latest drivers. Many of us in the [H]ardforum community still play classic Quake and love documenting new mods that breathe life into the game after all of these years. Nvidia can we get a patch soon? Shout-out to community member Jim Kim for the story. The last few sets of Nvidia Display drivers have broken the engine's graphics when shadow mapping is enabled (soft shadows) causing black square glitches to appear all over the screen. Shadow mapping has to be disabled to remove these glitches, however, it makes the game even more taxing as shadow mapping made the game run faster, but Nvidia doesn't seem to care and have not addressed this issue in any subsequent driver updates. It's highly likely that a fix may never arise.