I can see some improvements after 5.2.0.18 update, in car i use dac with charger port ADA-HCPD USB-C - Hi-Res DAC audio adapter PD 60 W | AXAGON
Before update i have seen maximum current about 400mA, now it charges 2600mA+, well did not checked logs but i have patched patch ‘Powerdrain on statusbar’ by @nephros so can see the charging current as well