Earlier quoted context omitted.
Try pairing tmux with mosh, it's how I've been working for years whenever I'm forced to admin through a brittle straw. Mosh combats lag pretty well and doesn't care if your connection drops intermittently. https://mosh.org/
I tried Mosh but it didn't fit my taste. It tries to "predict" the state of the screen before being acknowledged by the server, but sometimes the prediction is wrong and Mosh reverts the cursor movement and redraws the affected area of the terminal. For example, when I'm using split windows in Vim or tmux, Mosh allows typed characters to overflow beyond the separator, briefly, until being told "no" by the server. Per…
I don't remember it doing any sort of prediction but the last time I used it was a while back.