ESP8266 Community Forum

Has anybody found a solution to this problem?

Yes: Develop custom firmware.
Perhaps another version of the AT firmware could be written on top of the available tool chain?
You'd only have to flash it once.

Note that the current AT command set isn't that great, because it is very hard to build a correct parser for it, partially because it is poorly documented, and partially because it's not designed for that.
Turning echo off helps, but is not sufficient.

Moin,

maybe the transparent bridge firmware is useful for you as-is or as starting point for customizing.

Cal

Anyone have a solution to this? I need to use a accelerometer with lower latency possible via udp to max msp.

The best you can do is get the Arduino IDE for the ESP8266 and write your own firmware.
Invent your own (simpler) serial protocol, and send/receive the data using UDP.
However, because of the various technologies involved, you won't get to, say, millisecond latency, neither over serial, nor over WiFi, nor over the end-to-end system.