Enabling telemetry and softserial while running other serial items will cause significant board lag.
To replicate:
feature -rx_parallel_pwm
feature rx_serial
feature gps
feature softserial
feature telemetry
set gps_baudrate=9600 (or your rate up to 19200)
set serial_port_1_scenario=5
set serial_port_2_scenario=3
set serial_port_3_scenario=2
set serial_port_4_scenario=4
Board will run extremely slow.
