Hi everyone,

When we pushed the anniversary event live last night, we discovered that the Jubilee Cake XP buff stacking was not working as we intended. We are currently testing a fix that, once implemented, will allow for the intended XP buff stacking so you can reach a total possible increase of 185%. We plan to roll out this fix tomorrow (4/5). We’ll provide the exact time tomorrow, and notify everyone when the hotfix is complete.

We will also be extending the ESO anniversary event by two days, so it will now end on Tuesday, April 12th at 8PM EDT.

In this post, you’ll find a brief explanation of how XP buff stacking works in ESO, how it is supposed to be working with the Jubilee Cake XP buff versus what is actually happening in-game right now, and what we’re doing to fix the current issue.

How XP Buff Stacking Works in ESO
In ESO, all XP buffs stack with each other, with the exception of Psijic Ambrosia and the Crown Experience Scroll. Not counting the Jubilee Cake, these are the different types of XP buffs currently in the game.

• Alliance War Keep buff – 5% XP buff (applies only to monster and player-character kills)
• Crown Experience Scroll – 50% XP buff (does not stack with Psijic Ambrosia)
• ESO Plus – 10% XP buff
• Grouping buff – 10% XP buff
• Psijic Ambrosia – 50% XP buff (does not stack with Crown Experience Scroll)
• Rings of Mara buff – 10% XP buff
• Exploration Trait XP buff – Varies depending on how many armor pieces have the Trait (applies only to exploration XP)

It is currently possible to stack XP buffs for a total possible increase of 85% for most types of content. There is normally a cap in place that prevents any event (a quest completion, a monster kill, etc.) from granting more than 10% of your total level value. For the anniversary event, that cap was raised from 10% to 30%.

How the Jubilee Cake XP Buff Works
The Jubilee Cake buff for the ESO anniversary event should be stacking with the following XP buffs:

• Alliance War Keep buff
• Crown Experience Scroll OR Psijic Ambrosia
• ESO Plus
• Grouping buff
• Rings of Mara buff
• Exploration Trait XP buff

With the Jubilee Cake buff, you should be getting an additional 100% plus the total possible 85% detailed above, for a grand total of 185%* as the highest possible XP buff increase during the anniversary event. That is not currently happening, though, and the percentage is capping out at 100%. We’re looking into why, as that is not intended.

*Please note: The Alliance War Keep XP buff applies only to monster and player-character kills, and the Exploration Trait XP buff applies only to exploration XP

As part of this hotfix, we will also be changing the Jubilee Cake buff so that it is not removed upon player-character death—this will make it a bit more useful in Cyrodiil and Imperial City.

Thank you all for your patience and dedication—now let’s eat some cake!