I have retina, I frequently experience crashes when re-entering atmosphere, to the point where everything heats up, with "complex" vessels. (science, batteries, struts and whatever) Chipset Model: AMD Radeon R9 M290X Type: GPU Bus: PCIe PCIe Lane Width: x16 VRAM (Total): 2048 MB Vendor: ATI (0x1002) Device ID: 0x6810 Revision ID: 0x0000 ROM Revision: 113-C408A0-729 EFI Driver Version: 01.00.729 Displays: iMac: Display Type: Retina LCD Resolution: 5120 x 2880 Retina Retina: Yes Pixel Depth: 32-Bit Color (ARGB8888) Main Display: Yes Mirror: Off Online: Yes Built-In: Yes