In the last week or so I've gone from being on an ADSL2 connection with interleaving on, to interleaving off to having a DIY master filter installed.
I'm in a cabinetised area around 200m by road from the cabinet.
Before the Master filter install my phone wiring was something like the below:
ETP-> Modem jack -> Adsl Modem (Dreytek Vigor 120) -> RT-N16 (PPPoE)
-> Phone jack 1 -> Standard ADSL filter -> Phone
-> Phone jack 2 (daisy chain off the back of phone jack 1 wall socket to unused jack)
-> Phone jack 3
The old wiring had a few Scotch Locs and few screw in connectors. with cabling twisted together to join it all together etc.
Really bad photo from my old Nokia or what it looked like before I started.

The new wiring is as below with Scotch Locs joining all wiring (input and 2 outputs off the master filter)
ETP-> Master Filter-> Modem jack -> Modem (Dreytek Vigor 120)
-> Phone jack 1 -> standard filter -> Phone
Phone Jack 1 & 2 retired (never used them)
The cable to the modem was standard phone with 2 pairs (blue/white, orange/white)
The modem is now connected to the master filter via Cat5e about 8 meters from the ETP
The ETP is the phone cable coming into the house and ending with all the phone wiring then piggybacked on top. Not like a box on the outside of the house onything fancy just a cable with the internal house wiring then attached.
The master splitter is a "DYNAMIX XDSL Master Wired in filter ADSL/ADSL2+/VDSL/VDSL2 "
Scotch locs were about 20 cents each and the Cat5e was $1.25m from JA Russell "retail" pricing.
Master filter was about $22 (PB Tech Easter sale)
Turning interleaving off ($5)
Total cost around $40 for all parts and turning interleaving off
So what improved?
Interleaving on to interleaving off -> (5% DS and 10% US speed increases).
Interleaving on -> Master Filter (8% DS and 34% US speed increases).
Interleaving off -> Master Filter (3% DS and 21% US speed increases).
As you can see the line stats were already quite decent before I started down the upgrade path. syncing at around 1.7Mbit DS and 950KB US.
Below are the screenshots and stats of my modem stats, speed tests and ping results.
Interleaving on
Modem details


Ping results
Pinging google.co.nz [203.97.30.155] with 32 bytes of data:
Reply from 203.97.30.155: bytes=32 time=35ms TTL=61
Reply from 203.97.30.155: bytes=32 time=36ms TTL=61
Reply from 203.97.30.155: bytes=32 time=35ms TTL=61
Reply from 203.97.30.155: bytes=32 time=35ms TTL=61
Ping statistics for 203.97.30.155:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 35ms, Maximum = 36ms, Average = 35ms
Pinging geekzone.co.nz [202.175.128.169] with 32 bytes of data:
Reply from 202.175.128.169: bytes=32 time=36ms TTL=121
Reply from 202.175.128.169: bytes=32 time=36ms TTL=121
Reply from 202.175.128.169: bytes=32 time=37ms TTL=121
Reply from 202.175.128.169: bytes=32 time=36ms TTL=121
Ping statistics for 202.175.128.169:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 36ms, Maximum = 37ms, Average = 36ms
Pinging pingtest.net [74.209.160.10] with 32 bytes of data:
Reply from 74.209.160.10: bytes=32 time=202ms TTL=53
Reply from 74.209.160.10: bytes=32 time=195ms TTL=53
Reply from 74.209.160.10: bytes=32 time=183ms TTL=53
Reply from 74.209.160.10: bytes=32 time=189ms TTL=53
Ping statistics for 74.209.160.10:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 183ms, Maximum = 202ms, Average = 192ms
Interleaving OFF
Modem stats


Ping Results
Pinging google.co.nz [203.97.30.163] with 32 bytes of data:
Reply from 203.97.30.163: bytes=32 time=9ms TTL=61
Reply from 203.97.30.163: bytes=32 time=9ms TTL=61
Reply from 203.97.30.163: bytes=32 time=10ms TTL=61
Reply from 203.97.30.163: bytes=32 time=10ms TTL=61
Ping statistics for 203.97.30.163:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 9ms, Maximum = 10ms, Average = 9ms
Pinging geekzone.co.nz [202.175.128.169] with 32 bytes of data:
Reply from 202.175.128.169: bytes=32 time=11ms TTL=121
Reply from 202.175.128.169: bytes=32 time=12ms TTL=121
Reply from 202.175.128.169: bytes=32 time=11ms TTL=121
Reply from 202.175.128.169: bytes=32 time=11ms TTL=121
Ping statistics for 202.175.128.169:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 11ms, Maximum = 12ms, Average = 11ms
Pinging pingtest.net [74.209.160.10] with 32 bytes of data:
Reply from 74.209.160.10: bytes=32 time=158ms TTL=53
Reply from 74.209.160.10: bytes=32 time=158ms TTL=53
Reply from 74.209.160.10: bytes=32 time=158ms TTL=53
Reply from 74.209.160.10: bytes=32 time=158ms TTL=53
Ping statistics for 74.209.160.10:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 158ms, Maximum = 158ms, Average = 158ms
Speed test
Using the Telstraclear speed test (http://www.telstraclear.co.nz/customer-zone/speedtest/)

Finally Interleaving Off with DIY Master filter
Modem Details


Ping
No real change from above
Speed test

Last Result:
Download Speed: 15561 kbps (1945.1 KB/sec transfer rate)
Upload Speed: 1052 kbps (131.5 KB/sec transfer rate)
Latency: 16 ms