Ending cusor motion takes ~3 seconds

[xobs]

The execution of the rmcup command takes about 3 seconds. That means that actions such as entering or exiting vim or tmux are very slow. It is difficult to quantify this slowness because the problem is in the terminal output and not in the pty.

For example, the following command appears to take 3 seconds when running under ConEmu, but is instantaneous when running under cmd.exe:

xobs@Cuboid:/$ time vim -c ":q"

real    0m0.184s
user    0m0.047s
sys     0m0.047s
xobs@Cuboid:/$

A workaround is to unset the rmcup command in termcap for the default terminal, xterm-256color:

$ infocmp xterm-256color | sed -E 's/rmcup=[^ ]+ //g' | tic -

This will place a patched termcap info file in ~/.terminfo/x/xterm-256color that simply removes the rmcup variable.

[xobs]

...of course, removing rmcup disables the ability to get the scrollbar back after running such commands. Whether this is preferable is left as an exercise to the reader.