Incremental and Max Memory usage for a P1

I'm making more test and the error message doesn't seem consistent, now it speak about a 25Gb max memory usage when it was >5 GB before :

Resource Governing: This operation was canceled because there wasn't enough memory to finish running it. Either reduce the memory footprint of your dataset by doing things such as limiting the amount of imported data, or if using Power BI Premium, increase the memory of the Premium capacity where this dataset is hosted. More details: consumed memory 25480 MB, memory limit 25348 MB, database size before command execution 251 MB. See https://go.microsoft.com/fwlink/?linkid=2159753 to learn more.