im using an Esp32 s3 with 16MB Flash and 8MB PSRAM. These are my pins.Using psram as buffer for data , it takes 134010 us to read 1 MB. (I dont use the default pin numbers to have a easier path from the esp32 to sdcard slot since im wiring it manually with very thin copper wires. Have 10k pullups on ...

Using the digitalwrite functions the esp32s3 does 5 to 8 KHz with gpio toggling. The esp32s2 does 100 KHz this way. Using the GPIO registers GPIO.out_w1tc and GPIO.out_w1ts , esp32s3 goes up to 88 KHz and esp32s2 is at 200KHz. When i use espidf with vscode its even worst all of the chips give a rate ...