"Performance issues" in Hull Rupture means at least three different things, and they do not share a solution:

  1. Bugs that cause frame drops — they appear at a specific action and get fixed over time.
  2. Slowdowns past wave 40, which the developer attributes to Endless Mode scaling rather than a rendering fault.
  3. General load before wave 40, which depends on how much the ship has grown rather than on how long the run has been going.
  • Lag at Wave 40 — the documented cause, what actually helps in the current build, and what is a waste of an evening.

The fastest test

A scaling problem gets worse the longer the run goes. A bug appears at a specific action — a breach, a purchase, a module placement. If pausing and resuming clears it, you are probably looking at the first category.