ya it's a shine mod i made a while ago.
https://steamcommunity.com/sharedfiles/filedetails/?id=603166012
sub to that and shine administration. when running on a local server, you'll need to enable the mod through the shine plugin (default key X). which means you need to add yourself as admin, the file is in appdata/roaming/ns2/shine
the top speed tracking should be on by default, but if it isn't type "pm_top_speed" into console.
the way it works is once you go above the threshold speed (hard coded to 12), the mod will monitor your speed and take a snapshot of whatever your max was. once you drop below 12, it displays it to you. because of it being hardcoded at 12, you'll want to evolve celerity to reach that as gorge on the first jump.
the mod has another use from when I was really tryhard at the game. you can type "pm_bot_location 1" in console to spawn a skulk bot at your position and viewangles. the purpose of it was for me to be able to test the sneakiness of skulk ambush spots by myself in a local server. pm_reset_skulk_bot to reset that bot. i'd suggest
bind KEY "pm_bot_location 1". if you kill the skulk bot, you'll need to use the reset command before spawning another, woops.
edit: helpful commands: cheats 1, autobuild, spawn spur, gorge, pres 100