Using the Tweak tester 2, I got the following results
http://ttester.broadbandreports.com/tweak/block:2bc9269?service=cable&speed=&os=winXP&via=normal1. Your Tweakable Settings:
Receive Window (RWIN): 29200
Window Scaling: 0
Path MTU Discovery: ON
RFC1323 Window Scaling: ON
RFC1323 Time Stamping: OFF
Selective Acks: ON
MSS requested: 1460
TTL: unknown
TTL remaining: 55
2. Test 146000 byte download
Actual data bytes sent: 146000
Actual data packets: 100
Max packet sent (MTU): 1500
Max packet recd (MTU): 1500
Retransmitted data packets: 0
sacks you sent: 0
pushed data pkts: 10
data transmit time: 0.694 secs
our max idletime: 92.5 ms
transfer rate: 125852 bytes/sec
transfer rate: 1006 kbits/sec
This is not a speed test!
transfer efficiency: 100%
3. ICMP (ping) check
Target unpingable