diff --git a/STATE.md b/STATE.md
index 33e3634..940eab1 100644
--- a/STATE.md
+++ b/STATE.md
@@ -34,3 +34,4 @@
 - [2026-03-14] llm_contrarian.push3 AW=150/250 clamped to 100 — three rounds unaddressed (#756)
 - [2026-03-14] bootstrap.sh hardcodes BASE_SEPOLIA_LOCAL_FORK even on mainnet forks (#746)
 - [2026-03-14] remove MAX_ANCHOR_WIDTH clamp in ThreePositionStrategy (#783)
+- [2026-03-14] increase CALCULATE_PARAMS_GAS_LIMIT from 200k to 500k (#782)
diff --git a/onchain/src/Optimizer.sol b/onchain/src/Optimizer.sol
index 4efa74c..954c775 100644
--- a/onchain/src/Optimizer.sol
+++ b/onchain/src/Optimizer.sol
@@ -128,15 +128,15 @@ contract Optimizer is Initializable, UUPSUpgradeable, IOptimizer {
     /// @dev Gas budget forwarded to calculateParams via staticcall.
     ///      Evolved programs that exceed this are treated as crashes — same outcome
     ///      as a revert — and getLiquidityParams() returns bear defaults instead.
-    ///      200 000 gives ~13x headroom over the current seed (~15 k gas) while
+    ///      500 000 gives ~33x headroom over the current seed (~15 k gas) while
     ///      preventing unbounded growth from blocking recenter().
     ///
     ///      Note (EIP-150 / 63-64 rule): the outer getLiquidityParams() call must
-    ///      arrive with at least ⌈200_000 × 64/63⌉ ≈ 203_175 gas for the inner
-    ///      staticcall to actually receive 200 000.  Callers with exactly 200–203 k
+    ///      arrive with at least ⌈500_000 × 64/63⌉ ≈ 507_937 gas for the inner
+    ///      staticcall to actually receive 500 000.  Callers with exactly 500–508 k
     ///      gas will see a spurious bear-defaults fallback.  This is not a practical
     ///      concern from recenter(), which always has abundant gas.
-    uint256 internal constant CALCULATE_PARAMS_GAS_LIMIT = 200_000;
+    uint256 internal constant CALCULATE_PARAMS_GAS_LIMIT = 500_000;
 
     /**
      * @notice Initialize the Optimizer.
diff --git a/onchain/test/FitnessEvaluator.t.sol b/onchain/test/FitnessEvaluator.t.sol
index 9434163..1b30c55 100644
--- a/onchain/test/FitnessEvaluator.t.sol
+++ b/onchain/test/FitnessEvaluator.t.sol
@@ -152,13 +152,13 @@ contract FitnessEvaluator is Test {
     /// @dev Must match Optimizer.CALCULATE_PARAMS_GAS_LIMIT. Candidates that exceed
     ///      this limit would unconditionally produce bear defaults in production and
     ///      are disqualified (fitness = 0) rather than scored against their theoretical output.
-    uint256 internal constant CALCULATE_PARAMS_GAS_LIMIT = 200_000;
+    uint256 internal constant CALCULATE_PARAMS_GAS_LIMIT = 500_000;
 
     /// @dev Soft gas penalty: wei deducted from fitness per gas unit used by calculateParams.
     ///      Creates selection pressure toward leaner programs while keeping gas as a
     ///      secondary criterion (ETH retention still dominates).
     ///      At 15 k gas (current seed): ~1.5e17 wei penalty.
-    ///      At 200 k gas (hard cap boundary): ~2e18 wei penalty.
+    ///      At 500 k gas (hard cap boundary): ~5e18 wei penalty.
     uint256 internal constant GAS_PENALTY_FACTOR = 1e13;
 
     // ─── Anvil test accounts (deterministic mnemonic) ────────────────────────