diff --git a/data/transactions/logic/eval.go b/data/transactions/logic/eval.go
index 139c5174a4..e6db3e61e6 100644
--- a/data/transactions/logic/eval.go
+++ b/data/transactions/logic/eval.go
@@ -2239,8 +2239,7 @@ func (cx *EvalContext) getTxID(txn *transactions.Transaction, groupIndex int, in
 	if inner {
 		// Initialize innerTxidCache if necessary
 		if cx.EvalParams.innerTxidCache == nil {
-			lastGroupLen := len(cx.getLastInnerGroup())
-			cx.EvalParams.innerTxidCache = make(map[int]transactions.Txid, lastGroupLen)
+			cx.EvalParams.innerTxidCache = make(map[int]transactions.Txid)
 		}
 
 		txid, ok := cx.EvalParams.innerTxidCache[groupIndex]
@@ -2262,7 +2261,6 @@ func (cx *EvalContext) getTxID(txn *transactions.Transaction, groupIndex int, in
 		cx.EvalParams.txidCache = make(map[int]transactions.Txid, len(cx.TxnGroup))
 	}
 
-	// Hashes are expensive, so we cache computed TxIDs
 	txid, ok := cx.EvalParams.txidCache[groupIndex]
 	if !ok {
 		if cx.caller != nil {
diff --git a/data/transactions/logic/evalAppTxn_test.go b/data/transactions/logic/evalAppTxn_test.go
index 8141bc7387..8472f47ebc 100644
--- a/data/transactions/logic/evalAppTxn_test.go
+++ b/data/transactions/logic/evalAppTxn_test.go
@@ -1423,6 +1423,7 @@ itxn Logs 0
 // reported with `global GroupID` are correct for top-level and inner transactions
 func TestTxIDAndGroupIDCalculation(t *testing.T) {
 	partitiontest.PartitionTest(t)
+	t.Parallel()
 
 	withoutGroupID := func(txn transactions.Transaction) transactions.Transaction {
 		txn.Group = crypto.Digest{}
@@ -1835,6 +1836,7 @@ int 1
 // correct for inner transactions
 func TestInnerTxIDCalculation(t *testing.T) {
 	partitiontest.PartitionTest(t)
+	t.Parallel()
 
 	type actualInfo struct {
 		txn         transactions.Transaction
@@ -2140,6 +2142,7 @@ int 1
 
 func TestInnerTxIDCaching(t *testing.T) {
 	partitiontest.PartitionTest(t)
+	t.Parallel()
 
 	parentAppID := basics.AppIndex(888)
 	childAppID := basics.AppIndex(222)