@cquast
The OC event_cnt is zero, so the clocks are not throttled. Please try printing frequency after disabling CCplex idle states and increased freq_compute_delay.
cat /sys/kernel/debug/tegra_cpufreq/B_CLUSTER/cc3/enable
cat /sys/kernel/debug/tegra_cpufreq/M_CLUSTER/cc3/enable
echo 2000 > /sys/kernel/debug/tegra_cpufreq/freq_compute_delay