Catalina on Intel NUC DC3217IYE - graphics problems

This is my first ever post on this forum, and my first ever Hackintosh attempt... so please bear with me!

First, what have I got?

Used Hardware
Intel® NUC-Kit DC3217IYE

• Mainboard-Chip Intel® QS77 Express-Notebookchip
• Processor i3-3217U Ivy Lake, 1.80GHz
• RAM 8Gb Kingston DDR3-1600 (2 x 4Gb SO-DIMMs)
• SSD SanDisk Z400s SSD mSATA 128Gb
• Video Dual HDMI
• Graphics Intel HD4000
• Audio HDMI
• Lan Intel E1000
• Wifi Broadcom BCM94352HMB
• USB 2.0 3 Ports
• Installed...

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