Strange Speed Problem with my Connection

[kins]

I have had a continuing problem with my network connection only on one pc. It happens whether I use a wired or wiresless connection. I pay for "Up to 20Mbps" download speeds. On speedtest.net I was geting about 1.5 Megabits until I ran TCP Optimizer. This problem even happens right after a fresh clean install of windows. It is the only computer on which I have the problem. After runing tcp optimizer I get around 18Mbps. Now here is the second problem. I had the laptop set to go into hibernation after I close the lid. I disabled hibernation because after I come out of hibernation my download speeds are back down to 1.5 Mbps. You can see the problem happening on speedtest.net because the gauge meeter sorta "shakes" while it is measuring the download speed. I also have documented the problem at another site,

http://forum.scottmueller.com/viewtopic.php?f=5&t=638

[kins]

SpeedGuide.net TCP Analyzer Results »
Tested on: 09.21.2008 17:38
IP address: 216.195.xxx.xx

TCP options string: 020405b40103030201010402
MSS: 1460
MTU: 1500
TCP Window: 256960 (multiple of MSS)
RWIN Scaling: 2
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: 44
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

[trogers]

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
TCP Receive Window - 513920
MTU Discovery - Yes
Black Hole Detect - No
Selective Acks - Yes
Max Duplicate ACKs - 2
TCP 1323 Options:
Windows Scaling - checked
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

Also, for wireless connections, try the tips mentioned at this thread:

http://forums.speedguide.net/showthread.php?t=203247