Strange Latency Issues since patch 8.1

[Judex-dalaran]

Ability/Loot Lag on North American Servers Despite Normal Latency

I posted this in the customer support forum and was advised to post here for help. For the last 2 days I have had this issue. I have lower latency (less than 30ms) at all times yet my spells do not register the input for about .5-2 seconds. Also, at times, skills that generate holy power will go off and the holy power will not generate for several seconds at times. This all happens for long periods of time where there will be this delay. This issue does not affect chat, or my ability to move a…