Bug VFXgraph + ShaderGraph + MeshOutput only rendering 1 particle in game view/VR hmd

Hey guys, using Unity 2021, Quest 2, VfxGraph output to Mesh and a simple shadergraph compute shader.

Has anyone ever had an issue where you'd see all particles in the scene view but not in the VR hmd or game view? THey only show 1 particle. when I remove the Shadergraph from the output mesh the VFXGraph starts working like normal in both views. Any ideas?

Tried switching Multipass/single instance modes for Windows+android(never built)
Switch from Opengls3.0 to Vulkan (android)
Depth Textures on/off
Changing Shadergraph node settings to lit/unlit/vfx graph supported.

Been looking everywhere

U can see in the image, all particles showing in scene but now game view. just 1.