i updated the .ccp but have always 28ms with 1 sensor
may send me your library ?
sorry but no, too much (other) experimental code in it. As soon as it is stable I'll get it incorporated in the official library.
I went through my previous post and found this bug (sorry)
// EXPERIMENTAL
bool DallasTemperature::isConnected(uint8_t* deviceAddress, uint8_t* scratchPad)
{
readScratchPad(deviceAddress, scratchPad); <<<<<<<<<<< should be readScratchPadFast(deviceAddress, scratchPad); of course
return true;
}
Explains why you still get 28 millis, it is experimental code (no guarantees 
(I'll fix the code in the prev post too) done