So, below is what happens when I load the lost vault addon:
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Some kind of a bug with this.
When I have this addon loaded it EXTREMELY slows down my game. Like, bad. I cast flame and it takes 5 seconds of real time for it to reach the target. No other addon does this. I sad cause the vault sounds awesome

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so no one else is experiencing extreme slowdowns when this addon is loaded? you have a serious memory leak here with this.
Im watching the tome process climb and climb and climb, and I am doing nothing. its up to 1.5gb of ram used only when this addon is loaded.
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Well, its not AS bad with the memory, but its still pretty bad. 2 screenshots below, 1 with the addon enabled showing memory usage, and 1 without it loaded.
WITH kestins loaded:

Then WITHOUT it loaded:

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This was with Item Vault, Kestins, and Stone Warden.
However, if I swap out kestins for anything else (Spellsword, barbarian, faeros, etc.) but keep item vault and stone warden it runs just fine.