Just incase anyone has updated their firmware, or messed with the PID’s too much and now it is in an unflyable state, here are the factory tuned settings for both 3S and 4S.
GTR-90 3S CLI Dump Settings
# diff
# version
# Betaflight / FURYF4OSD (FY4O) 3.2.3 Dec 11 2017 / 07:45:22 (cb962eda1) MSP API: 1.36
# name
name DIATONE-GT R90
# resources
# mixer
# servo
# servo mix
# feature
feature AIRMODE
feature ANTI_GRAVITY
feature DYNAMIC_FILTER
# beeper
beeper -GYRO_CALIBRATED
beeper -DISARMING
beeper -ARMING
beeper -ACC_CALIBRATION
beeper -ACC_CALIBRATION_FAIL
beeper -READY_BEEP
beeper -MULTI_BEEPS
beeper -ARMED
beeper -ON_USB
beeper -BLACKBOX_ERASE
# map
# serial
serial 2 2048 115200 57600 0 115200
# led
# color
# mode_color
# aux
aux 0 0 0 1900 2100
# adjrange
adjrange 0 0 2 900 2100 12 2
# rxrange
# vtx
# rxfail
# master
set gyro_sync_denom = 2
set gyro_notch1_hz = 0
set gyro_notch2_hz = 0
set rssi_channel = 16
set max_aux_channels = 12
set dshot_idle_value = 300
set motor_pwm_protocol = DSHOT600
set bat_capacity = 450
set vbat_warning_cell_voltage = 34
set current_meter = ADC
set vbat_scale = 112
set ibata_scale = 400
set ibata_offset = 20
set small_angle = 180
set pid_process_denom = 1
set osd_cap_alarm = 350
set osd_vbat_pos = 2497
set osd_rssi_pos = 40
set osd_tim_1_pos = 2486
set osd_tim_2_pos = 33
set osd_flymode_pos = 333
set osd_throttle_pos = 2519
set osd_vtx_channel_pos = 377
set osd_crosshairs = 200
set osd_ah_sbar = 200
set osd_ah_pos = 200
set osd_current_pos = 2504
set osd_mah_drawn_pos = 2511
set osd_craft_name_pos = 2094
set osd_gps_speed_pos = 218
set osd_gps_lon_pos = 82
set osd_gps_lat_pos = 65
set osd_gps_sats_pos = 51
set osd_home_dir_pos = 302
set osd_home_dist_pos = 303
set osd_compass_bar_pos = 266
set osd_altitude_pos = 247
set osd_pid_roll_pos = 423
set osd_pid_pitch_pos = 455
set osd_pid_yaw_pos = 487
set osd_debug_pos = 1
set osd_power_pos = 321
set osd_pidrate_profile_pos = 345
set osd_warnings_pos = 425
set osd_avg_cell_voltage_pos = 417
set osd_pit_ang_pos = 257
set osd_rol_ang_pos = 289
set osd_battery_usage_pos = 2472
set osd_disarmed_pos = 138
set osd_nheading_pos = 311
set osd_nvario_pos = 279
set osd_esc_tmp_pos = 82
set osd_esc_rpm_pos = 83
set osd_stat_max_spd = OFF
set osd_stat_min_rssi = OFF
set osd_stat_bbox = OFF
set osd_stat_bb_no = OFF
set osd_stat_tim_1 = ON
set debug_mode = NOTCH
# profile
profile 0
set dterm_lowpass_type = PT1
set dterm_notch_hz = 0
set vbat_pid_gain = ON
set anti_gravity_gain = 3000
set p_pitch = 34
set i_pitch = 48
set d_pitch = 21
set p_roll = 28
set i_roll = 41
set d_roll = 18
set p_yaw = 22
set i_yaw = 35
set p_level = 30
set i_level = 30
# rateprofile
rateprofile 1
set roll_srate = 75
set tpa_rate = 30
#
save
GTR-90 4S CLI Dump Settings
# diff
# version
# Betaflight / FURYF4OSD (FY4O) 3.2.1 Oct 15 2017 / 19:35:51 (434db9a36) MSP API: 1.36
# name
name DIATONE-GT-R90
# resources
# mixer
# servo
# servo mix
# feature
feature AIRMODE
feature ANTI_GRAVITY
feature DYNAMIC_FILTER
# beeper
beeper -GYRO_CALIBRATED
beeper -DISARMING
beeper -ARMING
beeper -ACC_CALIBRATION
beeper -ACC_CALIBRATION_FAIL
beeper -READY_BEEP
beeper -MULTI_BEEPS
beeper -ARMED
beeper -ON_USB
beeper -BLACKBOX_ERASE
# map
# serial
serial 2 2048 115200 57600 0 115200
# led
# color
# mode_color
# aux
aux 0 0 0 1900 2100
# adjrange
adjrange 0 0 2 900 2100 12 2
# rxrange
# vtx
# rxfail
# master
set gyro_notch1_hz = 0
set gyro_notch2_hz = 0
set rssi_channel = 16
set max_aux_channels = 12
set dshot_idle_value = 300
set motor_pwm_protocol = DSHOT600
set bat_capacity = 450
set vbat_max_cell_voltage = 42
set vbat_min_cell_voltage = 35
set vbat_warning_cell_voltage = 36
set current_meter = ADC
set ibata_scale = 250
set ibata_offset = 40
set small_angle = 180
set pid_process_denom = 1
set osd_cap_alarm = 350
set osd_vbat_pos = 2497
set osd_rssi_pos = 40
set osd_tim_1_pos = 2487
set osd_tim_2_pos = 33
set osd_flymode_pos = 333
set osd_throttle_pos = 2520
set osd_vtx_channel_pos = 377
set osd_crosshairs = 200
set osd_ah_sbar = 200
set osd_ah_pos = 200
set osd_current_pos = 2504
set osd_mah_drawn_pos = 2511
set osd_craft_name_pos = 2125
set osd_gps_speed_pos = 218
set osd_gps_lon_pos = 82
set osd_gps_lat_pos = 65
set osd_gps_sats_pos = 51
set osd_home_dir_pos = 302
set osd_home_dist_pos = 303
set osd_compass_bar_pos = 266
set osd_altitude_pos = 247
set osd_pid_roll_pos = 423
set osd_pid_pitch_pos = 455
set osd_pid_yaw_pos = 487
set osd_debug_pos = 1
set osd_power_pos = 321
set osd_pidrate_profile_pos = 345
set osd_warnings_pos = 425
set osd_avg_cell_voltage_pos = 417
set osd_pit_ang_pos = 257
set osd_rol_ang_pos = 289
set osd_battery_usage_pos = 2472
set osd_disarmed_pos = 138
set osd_nheading_pos = 311
set osd_nvario_pos = 279
set osd_esc_tmp_pos = 82
set osd_esc_rpm_pos = 83
set osd_stat_max_spd = OFF
set osd_stat_min_rssi = OFF
set osd_stat_bbox = OFF
set osd_stat_bb_no = OFF
set osd_stat_tim_1 = ON
set debug_mode = NOTCH
# profile
profile 0
set dterm_lowpass_type = PT1
set vbat_pid_gain = ON
set anti_gravity_gain = 3000
set p_pitch = 25
set i_pitch = 40
set d_pitch = 14
set p_roll = 20
set i_roll = 35
set d_roll = 11
set p_yaw = 25
set i_yaw = 25
set p_level = 30
set i_level = 30
# rateprofile
rateprofile 0
set roll_srate = 75
set tpa_rate = 40
#
save