SPI DMA has added delays running from interrupt task

[ckellar33]

I am running a simple SPI DMA transfer from within an interrupt task executor with Priority P0. In the task, I await for the rising edge of my data ready GPIO, and then begin an async SPI read immediately after within the same task. This should complete in ~41uS (27bytes @ 5.25MHz), but it is taking more like 60uS to complete and then return to the task.

Any thoughts?