Unfortunately, it does not look like we will be able to host them as Bethesda said they are taking full interest in hosting the servers on their own. Hopefully they will change their mind in the future
I believe I already had helped you with this in a ticket, but if i am mistaken you will want to use these two commands. OverrideOfficialDifficulty= and DifficultyOffset=
If you are able to fix your lag issues using the game.ini, please reply in this thread with any info as this seems to be a very common issue we are seeing with Rend, thank you