Need help with PCTG

[Rocketzx1]

I have gone through at least a couple hundred rolls of filament. I have only ever had 1 roll that I can say may have been bad. And I still am not 100% certain on that.
My filament gets opened, put on a printer, and stays there, sometimes for months until it's used up. I have never one time put filament in the oven, a dryer box, or anything else to try to get a roll to print. They just print.

I know filament can get brittle if left out. But once I get 3 or 4 coils into a half used roll... it's golden. Send me one of those rolls. I'll tell you what's wrong with it

Rule of thumb - and I have had way more than my share of weird ass problems that I could have just blamed the filament, the neighbor's dog, etc. But it is almost always some stupid little change that makes it work, or operator error, or that particular filament just runs different.

Here's a good one. I had my original CR10 setup as perfect as perfect gets. It was printing flawlessly, for days at a time. Then one day I checked my Octoprint from work and it was burrying itself in black spaghetti. I shut it down and when I got home I saw a perfect print 10mm high, then spaghetti, then it somehow reattached itself to the part, printed beautifully, then spaghetti again.

I spent days trying to figure that out. Then I watched the video. It was printing fine, then I noticed something. The curtain waved in the background. I went to spaghetti creation number 2. Right before it failed again, the curtain waved a little.

The ambient temp had raised and my AC kicked on, blowing cold air at my printer. Back then, nobody mentioned that kinda chit happening lol

I am not 100% certain the rolls are bad, but what are the odds that I get 2 rolls of PCTG white and then buy a different color of the same filament type from the same company, and the different color prints fine? To me that says bad batch.

But I can’t definitively say because I am still learning my 3d printer and 3d printing. I’m a beginner at best still. But I have been reading and watching videos, doing adjustments to the printer and slicer settings to dial it in. I have made some improvements.

I keep 4 rolls of filament in the ace pro at all times, and the rest of the filament in bags with desiccant. I always dry my filament for a minimum of 4 hours before use, even with new rolls.

Is it possible I am over drying my filament?