After some more debugging, this appears more as a library problem than an ESP32 problem. The TFT_22_ILI9225 library uses software SPI if the configuration uses non-standard pins for SPI. If I modify the library to use hardware SPI in all cases (which is fine on ESP32, but probably not on other platf...

Hi, I am using Arduino ESP32 on a Lilygo T-Beam v1.0 ESP32 (same problem on an older v0.7 T-Beam). Seems like using VSPI and HSPI concurrently on two different cores fails. I am using HSPI to communicate with the T-Beam's on-board SX1278 (a task on core 0) and VSPI to communicate with an external 2"...