I talked to Lokai about this already but for everyone else who is curious;
Dexter myself and Vorspire played with this a little while ago. Even on Atlantic it is VERY wonky. Sometimes half an addon will show, sometimes a few items, sometimes nothing. It made a lot more stuff worse on ServUO, when we played with it, and it created no benefit or direct lag improvements.
It seems to be an old "lag prevention" feature UO had. It made sense back in 1999 - 2000 when a good chunk of us were still rocking 56k modems.
Now fast forward to 2018 and the 300mb connects and this "feature" is no longer relevant. We will not be implementing it on UOH or even ServUO at this time.