I really like this mod and have managed to build a nice network around Kerbin. I used a lot of manual control when controlling probes and didn't notice much delay. I thought it was due to being so close to Kerbin so I ignored it. It's when I sent a probe to Duna for the first time that I noticed zero input delay... SAS and Science Equipment have a proper delay which I can see being processed. But I can rotate and adjust throttle instantly...