@substring hi I have a lg monitor 19" and when I try to use my rasberi pi 3 with recalbox the monitor will blink on and off not sure if it is a setting or not

hi I have a rasberi pi 3 and trying to use a computer monitor 19 inch with avg to
hdmi the monitor blinks on and off when trying to play games it doesn't do it on a computer any help with my problem I am using recalbox