Both my modern FHD monitors display flickering over VGA. It's less noticeable when using a nice thick VGA cable, but it's still there. The flickering goes away on only one of the two when lowering the resolution to 720p. The only thing you can do to get rid of it is use a digital input (DVI / HDMI …

my desktop uses a built-in graphic card and when i connected a new monitor - 23-inch (1920 x 1080@60Hz) via VGA connection and there's intermittent bad flickering and horizontal flashes......... i used the monitor as a tv using HDMI connection and it's fine........i connected 2 lower resolution …