Depends what poster above did. If they are just monitoring something at constant rate "just" low jitter" is enough.

No idea if ESP32 DMA engine can do it but common trick to get either constant rate input or output was just setting DMA engine to copy data from/to IO port to/from memory at constant rate.

I remember someone using it to drive some ridiculus number of RGB LEDs by basically using DMA to bitbang multiple chains of them at once

But yeah, using a simpler MCU as basically IO co-processor is usually simpler. I wish there was some kind of low pin bus that allowed to say directly map a part of memory to the chip on other side, akin to what RDMA does.