Thanks for the hint. It should probably be effective but only as long as the BLE server complies with the preferred parameters. However in my case it wasn't effective. I think I will try reinitializing the BLE stack.

No worries, thanks for the help.

@kbaud1
I sent you a PM.

Wow the forum admins are making it difficult..
I received your private message but I'm unable to send a reply. Anyways, here's my email address, you can reach me here if you are interested:

Nobody has the same problem?

Hi, I can't send you a PM because I just registered here but I sent you a friend request. I hope we can talk.

Hi, When I call esp_ble_gattc_open in the client and the server is not available, it takes 30 seconds until I get an ESP_GATTC_DISCONNECT_EVT event followed by an ESP_GATTC_OPEN_EVT event with the status parameter being ESP_GATT_ERROR. During these 30 seconds I can't do anything else related to BLE ...