I feel the "if I had more time" thing hard... Wish I could've added more to our game as well! The joy of Game Jams though I suppose...
That was the weird part - I was running it through SteamVR with the Valve Index on a 3090 GPU. So, definitely had the hardware to run it... I'm still unsure why it was so bad at launch, but then settled down nicely after a couple of deaths. Sorry I can't be of more help there!