- Joined
- Aug 14, 2012
- Messages
- 14
- Motherboard
- HP Spectre x360 15
- CPU
- i7-8550U
- Graphics
- HD620, 4K
I suspect this is just the classic problem reported with Broadwell on 10.12.4 and later.
Try with 10.11.x or 10.12.3 if you can.
Is it possible to downgrade to 10.12.3 or only fresh install ?