diff -U2 -r /var/lib/copr-rpmbuild/results/i2pd-git/upstream-unpacked/Source0/i2pd-openssl/libi2pd/Streaming.cpp /var/lib/copr-rpmbuild/results/i2pd-git/srpm-unpacked/i2pd-openssl.tar.gz-extract/i2pd-openssl/libi2pd/Streaming.cpp
--- /var/lib/copr-rpmbuild/results/i2pd-git/upstream-unpacked/Source0/i2pd-openssl/libi2pd/Streaming.cpp	2026-01-18 15:02:35.000000000 +0000
+++ /var/lib/copr-rpmbuild/results/i2pd-git/srpm-unpacked/i2pd-openssl.tar.gz-extract/i2pd-openssl/libi2pd/Streaming.cpp	2026-01-18 14:44:26.000000000 +0000
@@ -747,5 +747,5 @@
 				m_PrevRTTSample = rttSample;
 				m_Jitter = rttSample / 5; // 20%
-				m_Jitter += 5; // for low-latency connections
+				m_Jitter += 3; // for low-latency connections
 				m_JitterAccum = m_Jitter;
 				m_JitterDiv = 1;
@@ -768,5 +768,5 @@
 				if (jitter)
 				{
-					jitter += 5;	// for low-latency connections
+					jitter += 3;	// for low-latency connections
 					m_JitterAccum += jitter;
 					m_Jitter = m_JitterAccum / m_JitterDiv;
@@ -780,5 +780,5 @@
 				}
 			}
-			if (m_IsBufferEmpty || m_FastRTT >= m_MinRTT + m_Jitter*4 || m_RTT >= m_MinRTT + m_Jitter*4 || m_SlowRTT >= m_MinRTT + m_Jitter*4 || m_RTT > m_FastRTT)
+			if (m_IsBufferEmpty || m_FastRTT >= m_MinRTT + m_Jitter*3 || m_RTT >= m_MinRTT + m_Jitter*3 || m_SlowRTT >= m_MinRTT + m_Jitter*3 || m_RTT > m_FastRTT)
 			{
 				incCounter = 0;
@@ -788,5 +788,5 @@
 			//
 			// delay-based CC
-			if ((m_RTT > m_SlowRTT) && (m_SlowRTT >= m_FastRTT) && (m_FastRTT > m_MinRTT + m_Jitter*8) && (m_SlowRTT > m_MinRTT + m_Jitter*8) && !m_IsWinDropped && !m_IsClientChoked) // Drop window if RTT grows too fast
+			if ((m_SlowRTT > m_MinRTT + m_Jitter*6) && !m_IsWinDropped && !m_IsClientChoked) // Drop window if RTT grows too fast
 			{
 				LogPrint (eLogDebug, "Streaming: Congestion detected, reduce window size");
@@ -797,5 +797,5 @@
 
 			bool wasInitial = m_RTO == INITIAL_RTO;
-			m_RTO = std::max (MIN_RTO, (int)(m_RTT + m_Jitter*2 + m_ACKRecieveInterval)); // TODO: implement it better
+			m_RTO = std::max (MIN_RTO, (int)(m_RTT * 1.3 + m_Jitter + m_ACKRecieveInterval)); // TODO: implement it better
 
 			if (wasInitial)
@@ -1987,7 +1987,5 @@
 	void Stream::UpdatePacingTime ()
 	{
-		double rtt = m_MinRTT;
-		if (m_IsWinDropped)
-			rtt = m_SlowRTT;
+		double rtt = m_MinRTT + m_Jitter*2;
 		if (m_WindowDropTargetSize)
 			m_PacingTime = std::round (rtt*1000/m_WindowDropTargetSize);
@@ -2001,13 +1999,8 @@
 	{
 		if (m_WindowDropTargetSize)
-		{
-			m_LastWindowDropSize = m_WindowDropTargetSize * ((m_MinRTT + m_Jitter*6) / m_SlowRTT);
-			m_WindowDropTargetSize = m_LastWindowDropSize * m_MinRTT / m_SlowRTT;	// we start send faster when rtt will decrease
-		}
+			m_LastWindowDropSize = m_WindowDropTargetSize * ((m_MinRTT + m_Jitter*4) / m_FastRTT);
 		else
-		{
-			m_LastWindowDropSize = m_WindowSize * ((m_MinRTT + m_Jitter*6) / m_SlowRTT);
-			m_WindowDropTargetSize = m_WindowSize * m_MinRTT / m_SlowRTT;	// we start send faster when rtt will decrease
-		}
+			m_LastWindowDropSize = m_WindowSize * ((m_MinRTT + m_Jitter*4) / m_FastRTT);
+		m_WindowDropTargetSize = m_LastWindowDropSize * 0.5; // -50% to drain queue
 		if (m_WindowDropTargetSize < MIN_WINDOW_SIZE)
 			m_WindowDropTargetSize = MIN_WINDOW_SIZE;
diff -U2 -r /var/lib/copr-rpmbuild/results/i2pd-git/upstream-unpacked/Source0/i2pd-openssl/libi2pd/Streaming.h /var/lib/copr-rpmbuild/results/i2pd-git/srpm-unpacked/i2pd-openssl.tar.gz-extract/i2pd-openssl/libi2pd/Streaming.h
--- /var/lib/copr-rpmbuild/results/i2pd-git/upstream-unpacked/Source0/i2pd-openssl/libi2pd/Streaming.h	2026-01-18 15:02:35.000000000 +0000
+++ /var/lib/copr-rpmbuild/results/i2pd-git/srpm-unpacked/i2pd-openssl.tar.gz-extract/i2pd-openssl/libi2pd/Streaming.h	2026-01-18 14:44:26.000000000 +0000
@@ -65,5 +65,5 @@
 	const int MAX_WINDOW_SIZE_INC_PER_RTT = 512; // TODO: remove
 	const double RTT_EWMA_ALPHA = 0.1;
-	const double SLOWRTT_EWMA_ALPHA = 0.03;
+	const double SLOWRTT_EWMA_ALPHA = 0.02;
 	const double PREV_SPEED_KEEP_TIME_COEFF = 0.2; // 0.1 - 1 // how long will the window size stay around the previous drop level, less is longer
 	const int MIN_RTO = 20; // in milliseconds