Group Settings: Minimizing Lag
Removing the Vitals:
Open System.. Options.. Social Options.. Grouping..
Raid Vital Class Colour Location: select NONE
Show Companion Vitals in Raid Vital Windows: UNcheck box
Group Effect Options..
Only Show Dispellable Effects: CHECK box
Only Show Effects Cast By You: CHECK box
Special Effects Options:
Go to Options.. ..UI settings..
Reduce the size by dragging the bars next to 'Raid Vitals'
Uncheck all the boxes in the Special Effects Options section. Start with them all unchecked, and if it runs fine you can reintroduce each individual setting to your liking.
Read the tooltip for each one to see what it is (or ex., you may prefer to run with Combat Hit Effects enabled).
Also UNcheck 'Show Floaty Damage on Selection Portrait'.
Also:
Open your Social Panel, and go to the Raid Tab
There and you can UN-select the little boxes next to people's names.
see also: https://www.lotro.com/forums/showthread.php?521397-Reduce-Latency-and-Lag-in-the-Moors-A-Visual-Guide&p=7483969&posted=1#post7483969
see also: https://www.lotro.com/forums/showthread.php?553834-How-to-remove-the-name-vitals-of-group-memebers-from-my-screen