Here's my settings, running on a RPi4 - perhaps worth comparing with what you have at the moment, I don't have a delay on my QHY5LII... <INDIDriver> <newSwitchVector device='QHY CCD QHY5LII-M-6057d' name='DEBUG'> <oneSwitch name='ENABLE'> Off </oneSwitch> <oneSwitch name='DISABLE'> On </oneSwitch> </newSwitchVector> <newNumberVector device='QHY CCD QHY5LII-M-6057d' name='POLLING_PERIOD'> <oneNumber name='PERIOD_MS'> 1000 </oneNumber> </newNumberVector> <newSwitchVector device='QHY CCD QHY5LII-M-6057d' name='DEBUG_LEVEL'> <oneSwitch name='DBG_ERROR'> On </oneSwitch> <oneSwitch name='DBG_WARNING'> On </oneSwitch> <oneSwitch name='DBG_SESSION'> On </oneSwitch> <oneSwitch name='DBG_DEBUG'> On </oneSwitch> <oneSwitch name='DBG_EXTRA_1'> On </oneSwitch> </newSwitchVector> <newSwitchVector device='QHY CCD QHY5LII-M-6057d' name='LOGGING_LEVEL'> <oneSwitch name='LOG_ERROR'> On </oneSwitch> <oneSwitch name='LOG_WARNING'> On </oneSwitch> <oneSwitch name='LOG_SESSION'> On </oneSwitch> <oneSwitch name='LOG_DEBUG'> Off </oneSwitch> <oneSwitch name='LOG_EXTRA_1'> Off </oneSwitch> </newSwitchVector> <newSwitchVector device='QHY CCD QHY5LII-M-6057d' name='LOG_OUTPUT'> <oneSwitch name='CLIENT_DEBUG'> On </oneSwitch> <oneSwitch name='FILE_DEBUG'> Off </oneSwitch> </newSwitchVector> <newTextVector device='QHY CCD QHY5LII-M-6057d' name='ACTIVE_DEVICES'> <oneText name='ACTIVE_TELESCOPE'> EQMod Mount </oneText> <oneText name='ACTIVE_ROTATOR'> Rotator Simulator </oneText> <oneText name='ACTIVE_FOCUSER'> Focuser Simulator </oneText> <oneText name='ACTIVE_FILTER'> ASI EFW </oneText> <oneText name='ACTIVE_SKYQUALITY'> SQM </oneText> </newTextVector> <newSwitchVector device='QHY CCD QHY5LII-M-6057d' name='UPLOAD_MODE'> <oneSwitch name='UPLOAD_CLIENT'> On </oneSwitch> <oneSwitch name='UPLOAD_LOCAL'> Off </oneSwitch> <oneSwitch name='UPLOAD_BOTH'> Off </oneSwitch> </newSwitchVector> <newTextVector device='QHY CCD QHY5LII-M-6057d' name='UPLOAD_SETTINGS'> <oneText name='UPLOAD_DIR'> /home/astroberry </oneText> <oneText name='UPLOAD_PREFIX'> IMAGE_XXX </oneText> </newTextVector> <newSwitchVector device='QHY CCD QHY5LII-M-6057d' name='TELESCOPE_TYPE'> <oneSwitch name='TELESCOPE_PRIMARY'> Off </oneSwitch> <oneSwitch name='TELESCOPE_GUIDE'> On </oneSwitch> </newSwitchVector> <newSwitchVector device='QHY CCD QHY5LII-M-6057d' name='CCD_COMPRESSION'> <oneSwitch name='CCD_COMPRESS'> Off </oneSwitch> <oneSwitch name='CCD_RAW'> On </oneSwitch> </newSwitchVector> <newNumberVector device='QHY CCD QHY5LII-M-6057d' name='CCD_FRAME'> <oneNumber name='X'> 0 </oneNumber> <oneNumber name='Y'> 0 </oneNumber> <oneNumber name='WIDTH'> 1280 </oneNumber> <oneNumber name='HEIGHT'> 960 </oneNumber> </newNumberVector> <newNumberVector device='QHY CCD QHY5LII-M-6057d' name='CCD_BINNING'> <oneNumber name='HOR_BIN'> 1 </oneNumber> <oneNumber name='VER_BIN'> 1 </oneNumber> </newNumberVector> <newSwitchVector device='QHY CCD QHY5LII-M-6057d' name='CCD_STREAM_ENCODER'> <oneSwitch name='RAW'> On </oneSwitch> <oneSwitch name='MJPEG'> Off </oneSwitch> </newSwitchVector> <newTextVector device='QHY CCD QHY5LII-M-6057d' name='RECORD_FILE'> <oneText name='RECORD_FILE_DIR'> /home/astroberry/indi__D_ </oneText> <oneText name='RECORD_FILE_NAME'> indi_record__T_ </oneText> </newTextVector> <newNumberVector device='QHY CCD QHY5LII-M-6057d' name='RECORD_OPTIONS'> <oneNumber name='RECORD_DURATION'> 1 </oneNumber> <oneNumber name='RECORD_FRAME_TOTAL'> 30 </oneNumber> </newNumberVector> <newSwitchVector device='QHY CCD QHY5LII-M-6057d' name='CCD_STREAM_RECORDER'> <oneSwitch name='SER'> On </oneSwitch> </newSwitchVector> <newNumberVector device='QHY CCD QHY5LII-M-6057d' name='CCD_GAIN'> <oneNumber name='GAIN'> 1 </oneNumber> </newNumberVector> <newNumberVector device='QHY CCD QHY5LII-M-6057d' name='CCD_OFFSET'> <oneNumber name='OFFSET'> 180 </oneNumber> </newNumberVector> <newNumberVector device='QHY CCD QHY5LII-M-6057d' name='USB_SPEED'> <oneNumber name='SPEED'> 0 </oneNumber> </newNumberVector> <newNumberVector device='QHY CCD QHY5LII-M-6057d' name='USB_TRAFFIC'> <oneNumber name='TRAFFIC'> 30 </oneNumber> </newNumberVector> <newNumberVector device='QHY CCD QHY5LII-M-6057d' name='USB_BUFFER'> <oneNumber name='BUFFER'> 512 </oneNumber> </newNumberVector> </INDIDriver>Read More...