I can't believe how fast ImgProxy Pro is! I used the free version for a couple of years and then expanded to the Pro version to take advantage of some additional functionality. It took a bit of time for me to get everything set up correctly (I am running it on ECS instances, with the media being housed on AWS), but once I was able to get it figured out it has been rock solid. I haven't had a single issue with the software - it always delivers my images as expected.