Hi , @JVKR
According to my query in the backend database for this error detail code you provided, it didn't return any error message with "issue" severity, so it seems this dataflow refresh is running normally without any error message met, purely slow.
Based on my research and check internally, this intermenttent slowness for this dataflow refresh should be related to the "noisy neighbor in Gen2 Premium Capacities" due to the architecture of Gen2 capacity, actually this is using a couple of virtual machines with high quaily of hardware configuration for the capacities within the same cluster(like your capacity is based in America), but some neighbors are running some data refreshes which consumes high memory and CPU used.
Power BI Premium architecture - Power BI | Microsoft Learn
For the expected fixing time for this issue, the product group engineers currently can't provide, but they provide a work around to mitigate this issue, you may try to move to shared capacity and then change it back to premium capacity. And check the refresh situation again, Thanks!
Thank you for your time and sharing, and thank you for your support and understanding of PowerBI!
Best Regards,
Aniya Zhang
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