Hi all,
First please forgive my awful and poor english.

I have a local network using wifi. This local Network links to internet via the ethernet router of one of my PCs (let's call it PC 1) .
So PC1 has two IP : the ethernet one for internet and the local one (192.168.0.1) for the wifi.

It used to work very well until these latest days where my brodband started to give me silly and ridiculous values. I have a 8Mbps connection and used to have more than 800kbps downstream. Now it goes from 20!!! to a max of 250-300 kbps...

More than that, The tcp tool doesn't modify my settings!!!
I reset all my different caches (dns, arp) used winsock etc... No effect. tcp tool says the values are ok, but th SG tcp/ip analyser says it's not good.

Also i don't really know if i have to use the same parameters for internet (8Mbps) and for my wifi local network (54Mbps)...

Sorry again for my english, and i hope what i wrote is understandable.

Thanks for your help!!!

SpeedGuide.net TCP Analyzer Results
Tested on: 2012.10.26 21:01
IP address: 197.15.xxx.xxx
Client OS/browser: Windows XP (Chrome 22.0.1229.94)

TCP options string: 020405780103030101010402
MSS: 1400
MTU: 1440
TCP Window: 65536 (NOT multiple of MSS)
RWIN Scaling: 1 bits (2^1=2)
Unscaled RWIN : 32768
Recommended RWINs: 64400, 128800, 257600, 515200, 1030400
BDP limit (200ms): 2621kbps (328KBytes/s)
BDP limit (500ms): 1049kbps (131KBytes/s)
MTU Discovery: ON
TTL: 105
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)