Now that you have a baseline it's wise to PID tune with the other heater at print temp(especially while using a DC bed). Let the heat bed and nozzle cool to room temperature. With the nozzle in the center of the bed, about 3mm from the bed surface. Preheat to 200c.

Once the hot end temperature is stable, send M303 H0 P1 S60 to PID tune the bed.

When tuning is complete, turn off the hot end heater. Copy the M307 H0 output from the console and overwrite the current value in config.g and save.

When it asks you if you want to restart your printer, you can do so or select no and run M98 P"config.g". This will update the printer's configs

Let the nozzle cool to room temperature. Preheat the heat bed to 60c. Once the heat bed temperature is stable, send M303 H1 P1 S200 to PID tune the hot end.

When tuning is complete, turn off the heat bed. Copy the M307 H1 output from the console and overwrite the current value in config.g and save.