I have noticed very high memory usage on my EC2 instance, where even with no streams in or out the usage is ~95%. I can't see any reason why it should be anywhere near this high. I'm concerned this is causing some serious stream quality issues we're seeing in our testing (how could it not?). The memory doesn't seem to really go up any above the ~95% level during our tests with one stream in and a few out, but the stream quality is really bad. CPU levels stay low, so that's not an issue.
Is there a tutorial on how I can switch to a more powerful EC2 instance (we have a c4.xlarge, so I would like to try a c4.2xlarge and see what happens) while maintaining the same IP address? Is that at all possible? It would be much easier not to have to change where all our players are pointed.