HDMI issue in R2


if R2Output 1080P ,Screen works fine ,but if the screen is 1024x600 or 800x480 ,it just output half size ,but system think it is normally have the output in 1024x600 or 800x480. is there a way to solve this problem or how to force R2 output 1080P whatever EDID says. At My GTX1050Ti ,this screen works fine,and Intel output 1080P by default but can manually change to 1024x600. W%5BLXUEM~EGN%7BG0MVP%25MV(3TZ26NSS%7BMFB%5D40RQ60UP4D18