Baudrate, Timeout

[ckuehnel]

If I reduce the baudrate to 9600 I get a lot of timeout errors. With 115200 it is better. A higher timeout will get fewer errors.
Is there anything dependant from ESP-01 firmware version?

Furthermore I get command errors:
...
Setting AP + Station mode...
Success!
Listing all stations connected to the module in access point mode...
[]
Read DHCP client and server settings:
{'softAP': False, 'station': True}
Checking DHCP client and server settings...
Disable Station DHCP & Setting static IP...
Enable SoftAP DHCP...
Traceback (most recent call last):
File "", line 1, in
File "test.py", line 124, in
File "esp_at_uart.py", line 497, in set_dhcp_config
File "esp_at_uart.py", line 279, in _set_command
File "esp_at_uart.py", line 183, in _send_command
CommandError: Command error!

Any idea?