Budget Cuts (400940)

Describe the bug
Any time I enter the Showroom level of Budget Cuts, the performance grinds to an unplayable level. (>150ms frame timing) The previous levels and arcade mode have not shown this issue.

To Reproduce
Steps to reproduce the behavior:

1. Play Budget Cuts
2. Reach the Showroom level (or start a new game from there)

Expected behavior
Game performs as it has up to this point.

System Information (please complete the following information):

• Distribution: Ubuntu
• SteamVR version: beta 1.10.3
• Steam client version: Build date Dec 16 2019
• Opted into Steam client beta?: Yes
• Graphics driver version: 440.48.02
• Gist for SteamVR System Information: https://gist.github.com/The1AndMany/acb10f384f28fa86ca1d9cc2d80fa1ff

Screenshots
Main menu, no lag detectable.

Loading, level start, quit to main menu, main menu loaded, quit game. (Issue persists until game is closed)

Note: Commenters who are also experiencing this issue are encouraged to include the "System Information" and "Perf Data" sections in their replies.

Start by reproducing Budget Cuts' Showroom level on Ubuntu with the listed SteamVR, Steam client, and graphics driver versions, then compare its frame timing with earlier levels and arcade mode. Use the requested SteamVR System Information and Perf Data to identify what changes when the issue appears; done means the Showroom level no longer exceeds the reported unplayable frame timing.