diff --git a/crates/ml/src/hyperopt/adapters/dqn.rs b/crates/ml/src/hyperopt/adapters/dqn.rs
index 0376ba069..a4d6fcfd8 100644
--- a/crates/ml/src/hyperopt/adapters/dqn.rs
+++ b/crates/ml/src/hyperopt/adapters/dqn.rs
@@ -832,31 +832,18 @@ impl DQNTrainer {
 
         // ── Step 2: Try loading from fxcache ────────────────────────────────
         let fxcache_data: Option<crate::fxcache::FxCacheData> = fxcache_dir.and_then(|cache_dir| {
-            let data_dir_path = &self.dbn_data_dir;
-            // Resolve relative paths against workspace root (CWD may be crates/ml during tests)
-            let resolve = |raw: Option<&str>| -> Option<PathBuf> {
-                let s = raw?;
-                let p = PathBuf::from(s);
-                if p.exists() { return Some(p); }
-                if let Ok(manifest) = std::env::var("CARGO_MANIFEST_DIR") {
-                    if let Some(root) = std::path::Path::new(&manifest).parent().and_then(|p| p.parent()) {
-                        let abs = root.join(s);
-                        if abs.exists() { return Some(abs); }
-                    }
-                }
-                None
-            };
-            let mbp10 = resolve(self.mbp10_data_dir.as_deref());
-            let trades = resolve(self.trades_data_dir.as_deref());
-            let key_hex = crate::feature_cache::calculate_dbn_cache_key_full(
-                data_dir_path, mbp10.as_deref(), trades.as_deref(),
-                &self.symbol, &self.data_source,
-            ).ok()?;
-            let key: [u8; 32] = hex::decode(&key_hex).ok()?.try_into().ok()?;
-            let path = crate::fxcache::find_fxcache(&cache_dir, &key)?;
-            match crate::fxcache::load_fxcache(&path) {
+            // Load the first .fxcache file from the cache directory.
+            // The precompute step generates exactly one fxcache per dataset.
+            // Key-based lookup fails when MBP-10/trades paths differ between
+            // the precompute pod and the hyperopt pod (different PVC mounts).
+            let fxcache_path = std::fs::read_dir(&cache_dir).ok()?
+                .flatten()
+                .find(|e| e.path().extension().map_or(false, |ext| ext == "fxcache"))
+                .map(|e| e.path())?;
+            info!("Loading fxcache from {:?}", fxcache_path);
+            match crate::fxcache::load_fxcache(&fxcache_path) {
                 Ok(data) => {
-                    info!("fxcache hit: {} bars from {:?}", data.bar_count, path);
+                    info!("fxcache hit: {} bars from {:?}", data.bar_count, fxcache_path);
                     Some(data)
                 }
                 Err(e) => {