Tried using Thottlestop (TS) to prevent Current Limit Throttling: Tried increasing IccMax under CPU Core Voltage in TS, didn't work. PP0 Current Limit setting is also not available in Turbo Power Limits setting in TS.
The BIOS is locked down for any configuration of Current Limit. I wish EVGA would fix this and allow unlimited current, just like other boards. Even though the EVGA Z370 Micro has great VRMs, any production workloads using my 9900k (e.g. AVX) is crippled by current limit throttling.
EDIT: FIXED: Use Thottlestop. Click on TPL box. Change Power Limit 4 (the newer name for PP0 Current Limit) max value to 0. Now I no longer get any Current/EDP Throttling. In case you want to revert the change, my default PL4 value on BIOS v1.16 was 300 for min and max.