The First 3/4 Quart Burns Fast, Then Almost Stops at 1/4?

Your not overfilling it are you? Only 3.8 qts at oil change(dipstick read correct?). Will definitely burn if overfilled
Got lucky with mine with 166k does not burn any oil, still not with 210k now.

SM-G960U ?

 

Consider keeping the line at halfway between the marks and see what happens. I am a little compulsive about keeping it at the full line but am finding that the middle of the marks also works.

 

Depends when you're checking these things too usually you want to stop go in the house do your business wait 10-15 minutes before you check the oil makes a big difference You don't need to be at the full mark You need to be between the low mark and the full mark on the cross hatch. I don't think it's these engines I have a few of these that are burning oil and they burn it right down to the low mark I don't it takes about whole 4,000 mi something like that It's actually seemingly more stops and starts you make but I noticed around $4,000 mi I'm almost down to the low Mart which is what a quart and a half or I'm not even real sure anymore and I try to bring it up almost to the full mark if I'm a millimeter below it or so no problem I don't feel it until it goes full as long as I'm well within the crosshatch I'm good and most of these one NZ engines are good right there.