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I'd be happy if it ran FreeRTOS. 8MB sounds like a whole lot of memory to me ... currently working with less than 512K on the esp32.

I have a LOLIN32 with 4MB RAM, it is a dream.

Are you sure that's RAM and not flash?

Not sure about GP, but the ESP32 supports psram up to 4mb, and newer chip versions come with an integrated 8mb psram.