well with my monk got my timing as brewmaster by adjusting loop limit , 100% uptime on ironbrew , just wondering if as prot pala would it make a difference ? with shield of righteous… im getting 51% uptime at moment which is good but hear can get 70% uptime etc
tldr: No loop limit adjustments wont affect your Shield uptime
big difference in brewmaster - ironbrew and paladin shield of righteous - the ironbrew ability is by default meant and able to be up 100% - the shield of righteous is not … not at all . there virutally is no way ever to get it to 100% without certain corruption gear that randomly would adjust cooldown of abilities …
now onto the important part … this build (Seraphim) uses Shield of the Righteous charges so your not looking to get alot of uptime with Shield of the Righteous anyhow … your popping Seraphim as much as possible for the secondary stat boosts …
if you are looking for more shield of the righteous uptime go use my other macro:
where it gives me about ~70% on long fights - which like i said earlier that without corruptions that randomly reduce your cooldowns that would be about the best you could do (even with crazy high haste)
but then if your looking for 100% uptime (on short fights) then you would just use Memory of Lucid Dreams as your Major and pop that which would allow you 100% uptime on shield for short fights (aka big pulls and such)
ahh ok so 50% uptime with seraphim is pretty good then , prefer the dps increase using seraphim, thanks for reply 
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on another note I seem to be struggling with your ret macro, any chance of inboxing me save posting on here please ? would really appreciate it thanks