This can be conveniently accounted via Fast Travel time. I did, for the sake of testing, run from Falkreath to Markarth one more time in SSE itself and timers are still correct. Dragons under the Bend will shout will now fly to a destination you pick on the map in real time … It will change your fast travel time based on a very helpful "Skyrim Distances 2.0" … This file is just an ESP-ESL/ESPFE which contains a single game setting fFastTravelSpeedMult It can be safely installed or uninstalled mid-game. Mod is save-friendly and can be safely installed/uninstalled during playthrough. This is actually a port from vanilla Skyrim.

Relative fast travel speed is not affected by in-game timescale if it was changed. Ports over the Real-Time Dragon Fast travel to Skyrim: Special edition.

Changelog: