Here is what the repeating group looks like in the editor. There was one user who was very active around the time of these spikes. This user has 480 items in her list. (It is an inventory/sales app). From the server logs it appears she was making updates to individual items. The list repopulates after every update so I can see how having it reload a lot could use up some WUs. I’m not seeing any actions in the server log that are more than 10 WUs. Most are 0.6 WUs. I’m not understanding where almost 800,000 WUs were used.