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How do downgrade to Sierra ... due to GTX660 glitching??

Joined
Jul 15, 2014
Messages
15
Motherboard
Gigabyte Z77X-UD5H
CPU
3.49 GHz Intel Core i7
Graphics
NVIDIA GeForce GTX 660 2047 MB
Mobile Phone
  1. Android
Okay, so based on reading numerous threads on this forum, it is apparent that despite many heroic efforts, there is currently (as of 1/31/18) no viable resolution to the graphics glitching problem on various GPUs, not limited to my GTX660 (other threads mention 1050 and others).

So finding a new graphics card that will work is probably out of the question (however, suggestions very welcome!).

I'm stuck with downgrading to Sierra from High Sierra but I've just spent a week getting HS working and all my programs re-set up.

QUESTION: How do I downgrade gracefully to Sierra from High Sierra without losing apps or settings (other things like git, node, etc.)? I assume I can create a USB and do a clean install but I'd rather avoid that drastic measure as I'd loose settings.

Any other suggestions?

Thx!
 
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