Were Opus 4 Usage Limits Lowered Recently?

A few days ago I finally decided to upgrade to the Max plan ($100/mo) after hearing all the praise about the massive usage limits and Opus access. From my experience, Sonnet's allowance feels generous, but Opus seems limited to ~20% of my total quota, and I've been able to burn through that in just one or two prompts in large codebase.

For anyone on the $200/mo Max plan:

1. Does Opus get more than that 20% slice, or is the cap the same?
2. Have the quotas been adjusted recently as Claude Code's popularity has surged? If so, are these changes permanent or just temporary while the infrastructure scales?

I'm debating whether or not to upgrade, but IMO a 4x overall limit won't help much if the Opus ceiling stays put. Appreciate any clarifications!