As 1280x720 was a big resolution for my computer and 640x360 was so small, I tried an intermediate res: 800x450. It works, but with color glitches:
I looked for a 16:9 resolution with integral numbers and almost every resolution has the glitch. I found that 704x396 has no glitch and it was the closest to the middle between VGA and HD resolution.
As 1280x720 was a big resolution for my computer and 640x360 was so small, I tried an intermediate res: 800x450. It works, but with color glitches:![Captura de pantalla -2020-05-08 19-18-14](https://user-images.githubusercontent.com/4954109/81567802-3cdf2300-9373-11ea-841b-33cb73aa0ce2.png)
I looked for a 16:9 resolution with integral numbers and almost every resolution has the glitch. I found that 704x396 has no glitch and it was the closest to the middle between VGA and HD resolution.