I am very much a newb when it comes to r/c, but like many others, I got pulled into the hobby with the phantom, and picked up a 1.1.1 to fly around a mobius camera. Long story short, I recently sprung for the vision props, and tried them out with stock gains. Unfortunately, it didn't turn out to well, and the phantom seemed to take on a mind of it's own.
The first flight with them was up at my boss' cabin, which admittedly was within view of high voltage powerlines AND a cell tower, but after getting home today, I tried it out in the back yard (after checking the imu for the need to recalibrate, which it didn't) and it exhibited the same symptoms.
First off, there was no slow hover at 3-5 feet like I usually do with the stock props, I lifted off and it kept rising slowly, and drifting around in a 10-12 foot area. Controlling it was about 50/50, and it soon was wandering and rising and it seemed like the phantom was trying to overcompensate for its overcompensations finally leading to a crash on all 3 attempts. On all three flights, I tried landing as soon as it seemed I was losing control, but pulling down on the left stick was doing nothing. On the second flight at the cabin, it got quite a bit away over a wooded area, so I switched the controller off, hoping for a return to home, but it drifted a little further and came down teetering the whole way like it was falling through propwash. All three flights I waited for gps lock before closing the battery door and lifting off.
After crashing again here at the house, I decided to put the stock props back on, and it was immediately back to normal.
At this point I'm a little scared to try the vision props again, even with gain adjustments. And for what I'm doing with the phantom, I think the stock props are where it's at. Fwiw, the vision props were the ebay "xoxox" ones.
I guess this is mostly my take on vision props on a 1.1.1, but also a warning to others to be in a safe area when first flying with different style props.