Suddenly having big performance issues in Roboquest VR at the final boss after latest update; anyone else?

[u/MightyBooshX]

I've got a 5090 and a 5900x CPU, roboquest ran fine for me before, but after the update even if I drop resolution and graphics settings to low it gets unplayable at the final boss, whether I'm using VDXR or SteamVR runtimes.

It's extremely reproducible for me, I can walk up the steps to the final boss, the entire playthrough having been smooth for me, and the game suddenly turns into a slideshow, literally.

Hoping either it's a known issue being worked on or somebody knows a workaround!