Curves Adjustment Line and Point Size

Could not agree more with this post. This makes it much more difficult to make fine adjustments especially when dealing with sensitive color and density corrections to any type of gradient within a photographic image. I hope this can be made optional in the very near future.

'Anyone else find the new curves adjustment line and points to be overly thick and huge?'
Yes, I see that here on Windows.

'...previous width and size of the line and curve points were just fine and easier to make small adjustments.'
Whilst I prefer the previous thin line curve display, I don't find any difference in the ability to make small adjustments. Both input and output step in increments of 1 whether using the mouse or the keyboard arrow keys.

Dave

There is no built-in Photoshop option to change the thickness of the curves line or points.

You could try resetting preferences or updating your graphics card. You could also try Preferences > Performance and take the check on or off of Graphics Card.