The furthest I have flown my Q500 4K was about 289 M (948 ft). At this point my video froze. I could still see my bird, but that was as far as I could get video. This, of course, is horizontal distance. I have flown 100 M vertical, before Canada capped the limit at 90 M. Now, my bird is stock out of the box. Trying to go further than your jurisdiction allows will always lead to eventual trouble. Either you are seen and reported by someone, or you post the video and Transport Canada (or FAA, CAA...) take notice, or you lost signal and encounter a fly-away. It is just not worth it in my assessment.