shader is not showing same with Retroarch when play video in screen 1600*1200

[Kira-Gao]

I am using a 4:3_16001200 screen to play 720P DVD rip animation in RA. The shader I used is nnedi3 RGB 2x + CRT royal , it is showing nice content but without subtitles . So I tried to use shader glass with the same preset file generated in RA. But I found the content is not showing the same with RA when I using a 4:3_16001200 screen . Due to scanlines of CRT display, jaggies appear along the edges of outlines. However this phenomenon is not present in RA. My pixel set is 1x as it is unclear to uses others, and I am using window mode to capture the content of players(no border preset). When I move the Shader Glass window to another display which is 38402160, the content shows correctly, no longer any jaggies . I will provide some comparation pictures later. It is appreciated if someone can help on resolving this. But the shader works correctly in RA by using 16001200 display so I don't think it is something incompatible in shader CRT Royal.