About playing 3D Video with stereo layer

[lzyplayer]

Thanks for such a great demonstration!
I'm currently working on playing high-res 3D videos on Unreal with Pico HMD. My source video is a horizontal concat 3D video. I've tried splitting the video with a material node and drawing the texture back to render target used by the stereo layer. Although this method works, it gets some block blur in the video.
Looking forward to a professional way or an example! Thanks for any reply and keep up the good work!

[MayGreat-early]

Did you find a way，bro?