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Space Gray
$799
4-Core
6-Core
Configurable to:
6-Core
Configurable to:
6-Core
8GB
Managing Power Options in Windows 10Hi,Thank you for writing to Microsoft Community Forums.I will help you with the information that you are looking for. Link state power management.
Configurable to:
256GB
Configurable to:
Intel UHD Graphics 630
Support for the following combination of maximum concurrent display setups:
Thunderbolt 3 digital video output supports
HDMI 2.0 display video output
Four Thunderbolt 3 (USB-C) ports with support for:
Wi-Fi
802.11ac Wi-Fi wireless networking
 IEEE 802.11a/b/g/n compatible
Bluetooth
Bluetooth 5.0 wireless technologyEthernet
10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)
 Configurable to 10Gb Ethernet (Nbase-T Ethernet with support for 1Gb, 2.5Gb, 5Gb, and 10Gb Ethernet using RJ-45 connector)
2.9 pounds (1.3 kg)
Line voltage:
100–240V AC
Frequency:
50Hz to 60Hz, single phase
Maximum continuous power:
150W
Operating temperature:
50° to 95° F (10° to 35° C)
Storage temperature:
–40° to 116° F (–40° to 47° C)
Relative humidity:
5% to 90% noncondensing
Operating altitude:
tested up to 16,400 feet (5000 meters)
Typical acoustical performance:
Sound pressure level (operator position): 5 dBA at idle3
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Some of your problems - the failed startups, connection issues with iOS devices, and display problems - could be hardware failures but were that the case I’d not expect it to be happening with lots of computers. Adding to Illaass’ questions: what’s LCD, keyboards, and mouses are you using? What other peripheral devices are connected to the computers? How are the display’s connected to the computer? (VGA adaptor, HDMI?)
Fallout 4 achievements with mods ps4. 
Other issues are probably related to the slow internal hard drives and lack of RAM. You might want to get an external SSD (USB3 or even better Thunderbolt) and see if that makes a significant difference in performance. While the RAM snapshot you showed doesn’t show any memory pressure, I’ll bet it would have been high if you had a project loaded in Xcode and were running the iOS emulator. (I’m guessing you weren’t so correct me if I’m wrong. I see greater RAM usage when I’m programming and I don’t have big projects going.)