diff --git a/packages/ssz/test/lodestarTypes/phase0/sszTypes.ts b/packages/ssz/test/lodestarTypes/phase0/sszTypes.ts
index 119f9eb1..6e124d45 100644
--- a/packages/ssz/test/lodestarTypes/phase0/sszTypes.ts
+++ b/packages/ssz/test/lodestarTypes/phase0/sszTypes.ts
@@ -256,7 +256,7 @@ export const Validator = new ContainerType(
 );
 
 // Export as stand-alone for direct tree optimizations
-export const Validators = new ListCompositeType(Validator, VALIDATOR_REGISTRY_LIMIT);
+export const Validators = new ListCompositeType(ValidatorNodeStruct, VALIDATOR_REGISTRY_LIMIT);
 export const Balances = new ListBasicType(UintNumber64, VALIDATOR_REGISTRY_LIMIT);
 export const RandaoMixes = new VectorCompositeType(Bytes32, EPOCHS_PER_HISTORICAL_VECTOR);
 export const Slashings = new VectorBasicType(Gwei, EPOCHS_PER_SLASHINGS_VECTOR);
diff --git a/packages/ssz/test/perf/deserializationEth2.test.ts b/packages/ssz/test/perf/deserializationEth2.test.ts
deleted file mode 100644
index 79599bb7..00000000
--- a/packages/ssz/test/perf/deserializationEth2.test.ts
+++ /dev/null
@@ -1,51 +0,0 @@
-import {itBench} from "@dapplion/benchmark";
-import * as sszPhase0 from "../lodestarTypes/phase0/sszTypes";
-import * as sszAltair from "../lodestarTypes/altair/sszTypes";
-import {getAttestation, getSignedAggregateAndProof, getSignedContributionAndProof} from "../utils/generateEth2Objs";
-
-describe("Deserialization of frequent eth2 objects", () => {
-  itBench<Uint8Array, Uint8Array>({
-    id: "deserialize Attestation - struct",
-    before: () => sszPhase0.Attestation.serialize(getAttestation(0)),
-    beforeEach: (bytes) => bytes,
-    fn: (bytes) => {
-      sszPhase0.Attestation.deserialize(bytes);
-    },
-  });
-
-  itBench<Uint8Array, Uint8Array>({
-    id: "deserialize Attestation - tree",
-    before: () => sszPhase0.Attestation.serialize(getAttestation(0)),
-    beforeEach: (bytes) => bytes,
-    fn: (bytes) => {
-      sszPhase0.Attestation.deserializeToView(bytes);
-    },
-  });
-
-  itBench<Uint8Array, Uint8Array>({
-    id: "deserialize SignedAggregateAndProof - struct",
-    before: () => sszPhase0.SignedAggregateAndProof.serialize(getSignedAggregateAndProof(0)),
-    beforeEach: (bytes) => bytes,
-    fn: (bytes) => {
-      sszPhase0.SignedAggregateAndProof.deserialize(bytes);
-    },
-  });
-
-  itBench<Uint8Array, Uint8Array>({
-    id: "deserialize SignedAggregateAndProof - tree",
-    before: () => sszPhase0.SignedAggregateAndProof.serialize(getSignedAggregateAndProof(0)),
-    beforeEach: (bytes) => bytes,
-    fn: (bytes) => {
-      sszPhase0.SignedAggregateAndProof.deserializeToView(bytes);
-    },
-  });
-
-  itBench<Uint8Array, Uint8Array>({
-    id: "deserialize SignedContributionAndProof - struct",
-    before: () => sszAltair.SignedContributionAndProof.serialize(getSignedContributionAndProof(0)),
-    beforeEach: (bytes) => bytes,
-    fn: (bytes) => {
-      sszAltair.SignedContributionAndProof.deserialize(bytes);
-    },
-  });
-});
diff --git a/packages/ssz/test/perf/deserializeEth2.test.ts b/packages/ssz/test/perf/deserializeEth2.test.ts
new file mode 100644
index 00000000..323c334d
--- /dev/null
+++ b/packages/ssz/test/perf/deserializeEth2.test.ts
@@ -0,0 +1,104 @@
+import {itBench} from "@dapplion/benchmark";
+import {BeaconState} from "../lodestarTypes/altair/types";
+import * as sszPhase0 from "../lodestarTypes/phase0/sszTypes";
+import * as sszAltair from "../lodestarTypes/altair/sszTypes";
+import {
+  getAttestation,
+  getOnce,
+  getRandomState,
+  getSignedAggregateAndProof,
+  getSignedContributionAndProof,
+} from "../utils/generateEth2Objs";
+import {TreeViewDU} from "../../src";
+
+describe("Deserialize frequent eth2 objects", () => {
+  itBench<Uint8Array, Uint8Array>({
+    id: "deserialize Attestation - struct",
+    before: () => sszPhase0.Attestation.serialize(getAttestation(0)),
+    beforeEach: (bytes) => bytes,
+    fn: (bytes) => {
+      sszPhase0.Attestation.deserialize(bytes);
+    },
+  });
+
+  itBench<Uint8Array, Uint8Array>({
+    id: "deserialize Attestation - tree",
+    before: () => sszPhase0.Attestation.serialize(getAttestation(0)),
+    beforeEach: (bytes) => bytes,
+    fn: (bytes) => {
+      sszPhase0.Attestation.deserializeToView(bytes);
+    },
+  });
+
+  itBench<Uint8Array, Uint8Array>({
+    id: "deserialize SignedAggregateAndProof - struct",
+    before: () => sszPhase0.SignedAggregateAndProof.serialize(getSignedAggregateAndProof(0)),
+    beforeEach: (bytes) => bytes,
+    fn: (bytes) => {
+      sszPhase0.SignedAggregateAndProof.deserialize(bytes);
+    },
+  });
+
+  itBench<Uint8Array, Uint8Array>({
+    id: "deserialize SignedAggregateAndProof - tree",
+    before: () => sszPhase0.SignedAggregateAndProof.serialize(getSignedAggregateAndProof(0)),
+    beforeEach: (bytes) => bytes,
+    fn: (bytes) => {
+      sszPhase0.SignedAggregateAndProof.deserializeToView(bytes);
+    },
+  });
+
+  itBench<Uint8Array, Uint8Array>({
+    id: "deserialize SignedContributionAndProof - struct",
+    before: () => sszAltair.SignedContributionAndProof.serialize(getSignedContributionAndProof(0)),
+    beforeEach: (bytes) => bytes,
+    fn: (bytes) => {
+      sszAltair.SignedContributionAndProof.deserialize(bytes);
+    },
+  });
+
+  for (const validatorCount of [300_000]) {
+    // Compute once for all benchmarks only if run
+    const getStateVc = getOnce(() => getRandomState(validatorCount));
+    const getStateViewDU = getOnce(() => sszAltair.BeaconState.toViewDU(getStateVc()));
+
+    itBench<Uint8Array, Uint8Array>({
+      id: `BeaconState vc ${validatorCount} - deserialize tree`,
+      before: () => getStateViewDU().serialize(),
+      beforeEach: (bytes) => bytes,
+      fn: (bytes) => {
+        sszAltair.BeaconState.deserializeToViewDU(bytes);
+      },
+    });
+
+    itBench({
+      id: `BeaconState vc ${validatorCount} - serialize tree`,
+      fn: () => {
+        getStateViewDU().serialize();
+      },
+    });
+
+    for (const {fieldName, fieldType} of sszAltair.BeaconState.fieldsEntries) {
+      // Only benchmark big data structures
+      if (fieldType.maxSize < 10e6 || fieldType.isBasic) {
+        continue;
+      }
+
+      itBench<Uint8Array, Uint8Array>({
+        id: `BeaconState.${fieldName} vc ${validatorCount} - deserialize tree`,
+        before: () => (getStateViewDU()[fieldName] as TreeViewDU<any>).serialize(),
+        beforeEach: (bytes) => bytes,
+        fn: (bytes) => {
+          fieldType.deserializeToViewDU(bytes);
+        },
+      });
+
+      itBench<BeaconState, BeaconState>({
+        id: `BeaconState.${fieldName} vc ${validatorCount} - serialize tree`,
+        fn: () => {
+          (getStateViewDU()[fieldName] as TreeViewDU<any>).serialize();
+        },
+      });
+    }
+  }
+});
diff --git a/packages/ssz/test/utils/generateEth2Objs.ts b/packages/ssz/test/utils/generateEth2Objs.ts
index 697ee321..a6a58c89 100644
--- a/packages/ssz/test/utils/generateEth2Objs.ts
+++ b/packages/ssz/test/utils/generateEth2Objs.ts
@@ -1,11 +1,33 @@
+import * as sszAltair from "../lodestarTypes/altair/sszTypes";
 import {Attestation, SignedAggregateAndProof, SignedBeaconBlock} from "../lodestarTypes/phase0/types";
-import {SignedContributionAndProof} from "../lodestarTypes/altair/types";
+import {SignedContributionAndProof, BeaconState} from "../lodestarTypes/altair/types";
 import {BitArray} from "../../src";
 
 // Typical mainnet numbers
 const BITS_PER_ATTESTATION = 90;
 const ATTESTATIONS_PER_BLOCK = 90;
 
+export function getRandomState(validatorCount: number): BeaconState {
+  const state = sszAltair.BeaconState.defaultValue;
+  for (let i = 0; i < validatorCount; i++) {
+    state.balances.push(34788813514 + i);
+    state.currentEpochParticipation.push(3);
+    state.previousEpochParticipation.push(7);
+    state.inactivityScores.push(0);
+    state.validators.push({
+      pubkey: new Uint8Array(48),
+      withdrawalCredentials: new Uint8Array(32),
+      effectiveBalance: 32e9,
+      slashed: false,
+      activationEligibilityEpoch: i,
+      activationEpoch: i,
+      exitEpoch: Infinity,
+      withdrawableEpoch: Infinity,
+    });
+  }
+  return state;
+}
+
 export function getAttestation(i: number): Attestation {
   return {
     aggregationBits: getBitsSingle(120, i % 120),
@@ -108,3 +130,13 @@ function randomBytes(bytes: number): Uint8Array {
 
   return uint8Arr;
 }
+
+export function getOnce<T>(fn: () => T): () => T {
+  let value: T | null = null;
+  return function () {
+    if (value === null) {
+      value = fn();
+    }
+    return value;
+  };
+}