Me no comprendo your englando. But really, I don't know what you mean by 190x6. But if you wanna "downscale" to 720p, you could put in a custom resolution and downscale to 720p.
For instance, you could try:
Put a custom resolution of 2560x1440 in your video settings in obs. Then in resolution downscale, you can set a resolution downscale of 2x, which lets you record in 720p and also gives you the ability to choose lanczos, bilinear or bicubic filter.
Now, because you changed your custom resolution, you also have to fit your scenes to full screen. So you go to your scenes, right click on monitor/game/or window capture (whatever you're using). then select "position size". and then select "fit to screen".
I hope it works for you and you understood my instructions. Any problems/misunderstandings? just ask ;)
