diff --git a/fdbclient/ServerKnobs.cpp b/fdbclient/ServerKnobs.cpp
index f6470df614..a0c967bae9 100644
--- a/fdbclient/ServerKnobs.cpp
+++ b/fdbclient/ServerKnobs.cpp
@@ -774,6 +774,7 @@ void ServerKnobs::initialize(Randomize randomize, ClientKnobs* clientKnobs, IsSi
 	init( GLOBAL_TAG_THROTTLING_TAG_EXPIRE_AFTER,              240.0 );
 	init( PROXY_MAX_TAG_THROTTLE_DURATION,          5.0 ); if( randomize && BUGGIFY ) PROXY_MAX_TAG_THROTTLE_DURATION = 0.5;
 	init( GLOBAL_TAG_THROTTLING_PROXY_LOGGING_INTERVAL,         60.0 );
+	init( GLOBAL_TAG_THROTTLING_MIN_TPS,                         1.0 );
 
 	//Storage Metrics
 	init( STORAGE_METRICS_AVERAGE_INTERVAL,                    120.0 );
diff --git a/fdbclient/include/fdbclient/ServerKnobs.h b/fdbclient/include/fdbclient/ServerKnobs.h
index 0c91172b4b..7b6e64dfc0 100644
--- a/fdbclient/include/fdbclient/ServerKnobs.h
+++ b/fdbclient/include/fdbclient/ServerKnobs.h
@@ -667,6 +667,11 @@ public:
 	double PROXY_MAX_TAG_THROTTLE_DURATION;
 	// Interval at which latency bands are logged for each tag on grv proxy
 	double GLOBAL_TAG_THROTTLING_PROXY_LOGGING_INTERVAL;
+	// When the measured tps for a tag gets too low, the denominator in the
+	// average cost calculation gets small, resulting in an unstable calculation.
+	// To protect against this, we do not compute the average cost when the
+	// measured tps drops below a certain threshold
+	double GLOBAL_TAG_THROTTLING_MIN_TPS;
 
 	double MAX_TRANSACTIONS_PER_BYTE;
 
diff --git a/fdbserver/GlobalTagThrottler.actor.cpp b/fdbserver/GlobalTagThrottler.actor.cpp
index 0859de9b60..373f49e2e8 100644
--- a/fdbserver/GlobalTagThrottler.actor.cpp
+++ b/fdbserver/GlobalTagThrottler.actor.cpp
@@ -226,9 +226,9 @@ class GlobalTagThrottlerImpl {
 			return {};
 		}
 		auto const transactionRate = stats.get().getTransactionRate();
-		// If there is less than one transaction per second, we do not have enough data
+		// If there is less than GLOBAL_TAG_THROTTLING_MIN_TPS transactions per second, we do not have enough data
 		// to accurately compute an average transaction cost.
-		if (transactionRate < 1.0) {
+		if (transactionRate < SERVER_KNOBS->GLOBAL_TAG_THROTTLING_MIN_TPS) {
 			return {};
 		} else {
 			return std::max(static_cast<double>(CLIENT_KNOBS->TAG_THROTTLING_PAGE_SIZE), cost.get() / transactionRate);
@@ -247,7 +247,7 @@ class GlobalTagThrottlerImpl {
 		auto const transactionRate = stats.get().getTransactionRate();
 		te.detail("TransactionRate", transactionRate);
 		te.detail("Cost", cost);
-		if (transactionRate < 1.0) {
+		if (transactionRate < SERVER_KNOBS->GLOBAL_TAG_THROTTLING_MIN_TPS) {
 			return {};
 		} else {
 			return std::max(static_cast<double>(CLIENT_KNOBS->TAG_THROTTLING_PAGE_SIZE), cost / transactionRate);