Cannot pass VRC.Quest.Performance.3 on a built Unity APK

We are struggling to hit the 4 second requirement for AppLab submissions in Unity 2019.4.7f1. Our app takes around 8 seconds to hit our empty scene except a canvas image and some text. Upon testing a sideloaded standard empty URP project with the Oculus SDK it takes longer than 4 seconds just to get into an empty scene with nothing but the default URP and Oculus SDK assets!! A splash screen seem to doesn't improve this at all either? - Worth noting that we are still needing to use the Legacy Oculus VR SDK as we need to remain cross-platform with SteamVR for the PC client.

I was wondering how it's possible that apps like Superhot and Beat Saber have managed to have a logo above the three Quest loading dots. And if that's something we would be able to set up for our app and would be appropriate to meet the VRC.Quest.Performance.3 criteria?

I have done much Googling for this and have come up completely short, this is completely stumping me so I hope someone can help!