Yeah, I feel this too. In fairness I use B4X using RDP, so there's some latency added there - don't know how much. And on the other side I'm used to Sublime Text (on my usual computer, so not via RDP), so I'm used to an exceptionally responsive editor. (On the third hand, I do sometimes use Sublime Text - to a lesser degree - via RDP too, and I've never reacted to it being slow when typing.)
There is zero delay when I type.
This might very well be true, but I would just add that some people seem to notice text-writing latency more than other people. I've heard people going nuts when they are forced to sit at a terminal window where they feel it's sluggish, and I just cannot for the life of me notice the latency.
I think I posted about this in the forum some years ago, without getting any traction. I've come to simply accept it, especially as I'm certainly causing some of it by using RDP.