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 ( 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
IP ToS: 00000000 (0)