If any of your RAM timings are odd (eg. 17), setting them to the next even number (eg. 18) helps a lot. Recompiling the kernel with CONFIG_RCU_NOCB_CPU and CONFIG_RCU_NOCB_CPU_ALL, and disabling ASLR is still necessary though. It may also be a good idea to give the SOC slightly more voltage, but not more than 1.2 V.
If any of your RAM timings are odd (eg. 17), setting them to the next even number (eg. 18) helps a lot. Recompiling the kernel with CONFIG_RCU_NOCB_CPU and CONFIG_ RCU_NOCB_ CPU_ALL, and disabling ASLR is still necessary though. It may also be a good idea to give the SOC slightly more voltage, but not more than 1.2 V.