Is the dev kit on steam the same one as the one here?

This download is a killer for me, its like 18-24 hours using the epic launcher. I get a little better speed from steam.
Also was wondering if I have to do the full download every time you update it?

No, the steam one has stopped receiving support/updates so right now the only option is Epic Launcher.

It needs to get some updates because steam install mine to a different folder so now I have to launch through a batch file and manually update.
Im not complaining but where ive been lately I dont have huge bandwidth speeds.