GGmax works really well in 4k resolution, the terrain looks beautiful, but like some others here I am getting 30fps with just terrain on 4k and HD 1080 resolutions. My card is an EVGA 8Gb GTX1070ti.... I know there is a lot of optimisation going on so I'm hopeful it will go back to the 60fps of previous versions. Not sure why it dropped though. The terrain now renders a lot quicker from after clicking test game, i'm in and running around in a few seconds.
Aftershock Quad Core AMD FM2+ 3.5 GHz 8GB Motherboard and Processor, A7700k apu, EVGA GTX1070ti 8gb Nvidia gfx card.
Waldorf Blofeld Synth, Novation Ultranova Synth, Roland D05 Synth, Akai MPX8 sample player, Axus Digital AXK2 Digital Drum Kit, AKG K141 Studio Headphones, Asus Ryzen 7 Vega 10 gfx chip, Vivobook Laptop, with Windows 10 64bit, 8Gb Ram.
Cherry audio Voltage Modular Synth, PS-20 Synth, Eight Voice Synth, CS2600 Synth, JU106 Synth. Samson Graphite 49 Midi Controller Keyboard