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Vulkan Video very slow

I have a project with several video files that are played on a screen in game. The videos are 1280x720 H.264 MP4 with stereo sound. I'm using the Unreal engine and everything works perfectly when I build to ES3.1 but when I do a Vulkan build the framerate drops to ~53 fps during video playback. I've tried 32 and 63bit builds with the same results. Anyone else have video to texture issues with Vulkan?

Honored Guest
Hi, I've just spent half my day on this issue, I'm not an expert in Unreal but can confirm there is a massive difference between Vulkan and OpenGL ES3.1
Hopefully this saves someone some time 🙂

Oculus Quest 1
UE 4.25.3
Vulkan - 17 FPS
OpenGL ES3.1 - 72 FPS
Tested on industry-standard professional 360 video (3840x1920 h264 mp4)
Using Unreal MediaPlayer & a flipped normal sphere

Expert Protege

This problem still exists, is this a problem with the quest in specific or does anyone know if it’s an android think or a bug with Vulkan directly?! 🤔