The obvious solution is to switch to 32Bit Architecture. Sounds good on paper, but with my tests so far on ARM and DUE based processors, there’s always something major which doesnt work. 32 Bit firmware development is still in its infancy and there is a plethora of board specific issues. DUE boards, getting SD card AND LCD is an issue due to shared SPI. The ARM boards handle this better however they’re electronically more fragile – having fried about 5 stepper DIR pins so far with my tinkerings. Something which I never managed to do on Rumba boards no matter how hard I tried.