Help With Comcast Speed

[triscuitcan]

hello everyone, i need help. (: OK so i got comcast internet and it has gotten really ****** in the last few weeks. it has been good at sometimes and absolutly slow sometimes. I contacted comcast and they said my Upstream Transmit Power is out of range at 53.6 dBmV. when im playing cod4 i get constant flashing connection problem and webpages load really slow. Internet videos like youtube wont even load. I have to wait for it to buffer which i have never had to do before. Comcast charges 50 bucks to come out and "check on the issue" so idk. when i do speedtest it changes every time
Heres it in a 10 min timeframe
http://www.speedtest.net/result/304561269.png
http://www.speedtest.net/result/304561721.png
http://www.speedtest.net/result/304565728.png
................look what it was in 2007............
http://www.speedtest.net/result/215259529.png

any help would be greatly apreciated!!

[Rollingstone]

What speed are you paying for ?

Post your TCP Analyzer Report.

[triscuitcan]

« SpeedGuide.net TCP Analyzer Results »
Tested on: 08.04.2008 05:10
IP address: 67.173.xxx.xx

6mbps
TCP options string: 020405b40103030201010402
MSS: 1460
MTU: 1500
TCP Window: 65700 (multiple of MSS)
RWIN Scaling: 2
Unscaled RWIN : 16425
Reccomended RWINs: 64240, 128480, 256960, 513920
BDP limit (200ms): 2628kbps (329KBytes/s)
BDP limit (500ms): 1051kbps (131KBytes/s)
MTU Discovery: ON
TTL: 115
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
TCP Receive Window - 256960
MTU Discovery - Yes
Black Hole Detect - No
Selective Acks - Yes
Max Duplicate ACKs - 2
TCP 1323 Options:
Windows Scaling - check
Timestamps - uncheck

Advanced Settings tab:
Max Connections per Server - 10
Max Connections per 1.0 Server - 20
LocalPriority - 1
Host Priority - 1
DNSPriority - 1
NetbtPriority - 1
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
Then select "Apply Changes" and reboot to take effect