How to set upper memory bound? The sys.txt looks like this:

Spoiler: sys.txt
[dynamiccompressor]
compressor=1
a0=56806
thrs=24703
ratio=8
gain=12

[interface]
extra_settings=0
laneinfo_signpost_enabled=1
shutdown_time=0


[feature]
signpost_coloring=1

[debug]
experimental_features=1
skip_eula=1

[power]
skip_resume_process=1
skip_suspend_process=1

[gps]
port=auto
baud=auto

[sound]
csv_voice_enabled=1
queue_length=200
sound_q_length=250

[tts]
correction_overspeed_unit=1
always_say_road_names=3
announce_exit_directions=1
announce_street_name=1
priority="HIGH"
tts_buffer=524288 ;(131072)
ttspro_da_voice_enabled=1
tts_logics=3
skip_exit_numbers=2