diff --git a/yarn-project/end-to-end/src/e2e_deploy_contract/deploy_method.test.ts b/yarn-project/end-to-end/src/e2e_deploy_contract/deploy_method.test.ts
index ed7cfba703fb..708215460821 100644
--- a/yarn-project/end-to-end/src/e2e_deploy_contract/deploy_method.test.ts
+++ b/yarn-project/end-to-end/src/e2e_deploy_contract/deploy_method.test.ts
@@ -157,7 +157,7 @@ describe('e2e_deploy_contract deploy method', () => {
 
     // First send the deploy transaction
     // Pay priority fee to ensure the deployment transaction gets processed first.
-    const maxPriorityFeesPerGas = new GasFees(1n, 0n);
+    const maxPriorityFeesPerGas = new GasFees(0n, 1n);
     const deployTxPromise = deployTx.send({
       from: defaultAccountAddress,
       fee: { gasSettings: { maxPriorityFeesPerGas } },
diff --git a/yarn-project/end-to-end/src/e2e_p2p/gossip_network.test.ts b/yarn-project/end-to-end/src/e2e_p2p/gossip_network.test.ts
index ff561ecfff69..eba29fcf1e3b 100644
--- a/yarn-project/end-to-end/src/e2e_p2p/gossip_network.test.ts
+++ b/yarn-project/end-to-end/src/e2e_p2p/gossip_network.test.ts
@@ -30,6 +30,8 @@ const CHECK_ALERTS = process.env.CHECK_ALERTS === 'true';
 const NUM_VALIDATORS = 4;
 const NUM_TXS_PER_NODE = 2;
 const BOOT_NODE_UDP_PORT = 4500;
+const AZTEC_SLOT_DURATION = 36;
+const AZTEC_EPOCH_DURATION = 4;
 
 const DATA_DIR = fs.mkdtempSync(path.join(os.tmpdir(), 'gossip-'));
 
@@ -61,8 +63,8 @@ describe('e2e_p2p_network', () => {
       startProverNode: false, // we'll start our own using p2p
       initialConfig: {
         ...SHORTENED_BLOCK_TIME_CONFIG_NO_PRUNES,
-        aztecSlotDuration: 36,
-        aztecEpochDuration: 4,
+        aztecSlotDuration: AZTEC_SLOT_DURATION,
+        aztecEpochDuration: AZTEC_EPOCH_DURATION,
         slashingRoundSizeInEpochs: 2,
         slashingQuorum: 5,
         listenAddress: '127.0.0.1',
@@ -205,13 +207,15 @@ describe('e2e_p2p_network', () => {
     }
 
     // Ensure prover node did its job and collected txs from p2p
+    // Timeout must exceed one full epoch (aztecSlotDuration * aztecEpochDuration = 36 * 4 = 144s)
+    // plus time for the prover to generate and submit the proof.
     await retryUntil(
       async () => {
         const provenBlock = await nodes[0].getProvenBlockNumber();
         return provenBlock > 0;
       },
       'proven block',
-      120,
+      300,
     );
   });
 });
diff --git a/yarn-project/sequencer-client/src/client/sequencer-client.test.ts b/yarn-project/sequencer-client/src/client/sequencer-client.test.ts
index e325cefca47d..fde8ab830cfa 100644
--- a/yarn-project/sequencer-client/src/client/sequencer-client.test.ts
+++ b/yarn-project/sequencer-client/src/client/sequencer-client.test.ts
@@ -22,8 +22,8 @@ describe('computeBlockLimits', () => {
   describe('L2 gas', () => {
     it('derives maxL2BlockGas from rollupManaLimit when not explicitly set', () => {
       const rollupManaLimit = 1_000_000;
-      // Single block mode (maxNumberOfBlocks=1), default multiplier=2:
-      // min(1_000_000, ceil(1_000_000 / 1 * 2)) = min(1_000_000, 2_000_000) = 1_000_000
+      // Single block mode (maxNumberOfBlocks=1), default multiplier=1.2:
+      // min(1_000_000, ceil(1_000_000 / 1 * 1.2)) = min(1_000_000, 1_200_000) = 1_000_000
       const result = computeBlockLimits(makeConfig(), rollupManaLimit, 12, log);
       expect(result.maxL2BlockGas).toBe(rollupManaLimit);
     });
@@ -43,8 +43,8 @@ describe('computeBlockLimits', () => {
     const daLimit = MAX_PROCESSABLE_DA_GAS_PER_CHECKPOINT;
 
     it('derives maxDABlockGas from DA checkpoint limit when not explicitly set', () => {
-      // Single block mode (maxNumberOfBlocks=1), default multiplier=2:
-      // min(daLimit, ceil(daLimit / 1 * 2)) = min(daLimit, daLimit * 2) = daLimit
+      // Single block mode (maxNumberOfBlocks=1), default multiplier=1.2:
+      // min(daLimit, ceil(daLimit / 1 * 1.2)) = min(daLimit, daLimit * 1.2) = daLimit
       const result = computeBlockLimits(makeConfig(), 1_000_000, 12, log);
       expect(result.maxDABlockGas).toBe(daLimit);
     });
@@ -78,14 +78,14 @@ describe('computeBlockLimits', () => {
     });
 
     it('derives maxTxsPerBlock from maxTxsPerCheckpoint when per-block not set', () => {
-      // Multi-block mode with maxNumberOfBlocks=5, multiplier=2:
-      // min(100, ceil(100 / 5 * 2)) = min(100, 40) = 40
+      // Multi-block mode with maxNumberOfBlocks=5, multiplier=1.2:
+      // min(100, ceil(100 / 5 * 1.2)) = min(100, 24) = 24
       const config = makeConfig({
         maxTxsPerCheckpoint: 100,
         blockDurationMs: 8000,
       });
       const result = computeBlockLimits(config, 1_000_000, 12, log);
-      expect(result.maxTxsPerBlock).toBe(40);
+      expect(result.maxTxsPerBlock).toBe(24);
     });
   });
 
@@ -97,14 +97,14 @@ describe('computeBlockLimits', () => {
       //   timeReservedAtEnd = 8 + 19 = 27
       //   timeAvailableForBlocks = 72 - 1 - 27 = 44
       //   maxNumberOfBlocks = floor(44 / 8) = 5
-      // With multiplier=2 and rollupManaLimit=1_000_000:
-      //   maxL2BlockGas = min(1_000_000, ceil(1_000_000 / 5 * 2)) = min(1_000_000, 400_000) = 400_000
+      // With multiplier=1.2 and rollupManaLimit=1_000_000:
+      //   maxL2BlockGas = min(1_000_000, ceil(1_000_000 / 5 * 1.2)) = min(1_000_000, 240_000) = 240_000
       const config = makeConfig({ blockDurationMs: 8000 });
       const result = computeBlockLimits(config, 1_000_000, 12, log);
-      expect(result.maxL2BlockGas).toBe(400_000);
+      expect(result.maxL2BlockGas).toBe(240_000);
 
       const daLimit = MAX_PROCESSABLE_DA_GAS_PER_CHECKPOINT;
-      expect(result.maxDABlockGas).toBe(Math.min(daLimit, Math.ceil((daLimit / 5) * 2)));
+      expect(result.maxDABlockGas).toBe(Math.min(daLimit, Math.ceil((daLimit / 5) * 1.2)));
     });
   });
 });