connection can't achieve desired speeds

[UltimateHigh1]

I just got recent speed upgrade out of nowhere and on my first test, I managed to pull down a 7.5mbps at speedtest.net. Now, it's more along the lines of a 4.5 to 5.5 mpbs. My ISP said I should be getting speeds ranging from 6mb to 8mb but it's never happened more than once.

any ideas/tweaks on how i could get a bit more speed? I have a cable connection btw.

[Rollingstone]

Which country are you in ?

Post your TCP Analyzer report.

[UltimateHigh1]

I live in the USA

« SpeedGuide.net TCP Analyzer Results »
Tested on: 05.11.2009 02:58
IP address: 74.221.xx.xx
Client OS: Windows XP

TCP options string: 020405b40103030201010402
MSS: 1460
MTU: 1500
TCP Window: 256960 (multiple of MSS)
RWIN Scaling: 2 bits (2^2=4)
Unscaled RWIN : 64240
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 10278kbps (1285KBytes/s)
BDP limit (500ms): 4111kbps (514KBytes/s)
MTU Discovery: ON
TTL: 43
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

[Rollingstone]

Try the following with TCP Optimizer:

General Settings tab:
Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - 1500
TTL - 64
Windows Scaling - check
TCP Receive Window - 128480
MTU Discovery - Yes
Black Hole Detect - No
Selective Acks - Yes
Max Duplicate ACKs - 2
TCP 1323 Options:
Timestamps - uncheck

Advanced Settings tab:
Max Connections per Server - 10
Max Connections per 1.0 Server - 10
LocalPriority - 5
Host Priority - 6
DNSPriority - 7
NetbtPriority - 8
Lan Browsing speedup - optimized
QoS: NonBestEffortLimit - 0
ToS: DisableUserTOSSetting - 0
ToS: DefaultTOSValue - 80
MaxNegativeCacheTtl - 0
NetFailureCacheTime - 0
NegativeSOACache Time - 0
LAN Request Buffer Size - 32768