Here are the results from last night until now, with an agc_vref setting of 300 300 300 300.
near-end path0 crc: 8715(758)
near-end fec sec: 275(21315)
near-end err sec: 268(347)
near-end ses sec: 22(36)
near-end los sec: 0(0)
near-end ua sec: 32(289)
far-end path0 fec: 4601(155675)
far-end path0 crc: 0(1120)
far-end fec sec: 48(4224)
far-end err sec: 0(969)
far-end ses sec: 0(0)
far-end los sec: 0(276)
far-end ua sec: 0(13649)
outPkts=7828964
inPkts=10296575
fwVer= FwVer:5.5.1.125_B_A60901 HwVer:T14.F7_0.1
lineState=up
Opmode=ITU G.993.2(VDSL2)
SNRMarginDown=8.9 dB
AttenDown=10.3 dB
SNRMarginUp=6.7 dB
AttenUp=0.1 dB
DataRateDown=72204 kbps
DataRateUp=19999 kbps
WanListMode=1
FECDown=79164
FECUp=4601
CRCDown=8715
CRCUp=0
HECDown=0
HECUp=0
ADSLUpTime= 7:30, 15 secs
ADSLActiveTime=0 min, 19 secs
PowerDown=13.0 dbm
PowerUp=4.8 dbm
AttainUp=25872
AttainDown=86380
ShowtimeStart=19
TotalStart=5296
ATURANSIRev=0
ATUCANSIRev=0
ATURANSIStd=0
ATUCANSIStd=0
InterleaveDepth=1
AdslStandard=VDSL2
AdslType=ANNEX_B
mtenStandard=G.dmt.bisplus
Had a burst of errors during the uptime somewhere, other than that it was mostly trickling of CRC's (around a rate of 1 every 2-3 minutes, which is about normal for my line at this speed :x).
The above was fastpath (INP 0, delay 1ms) with a target SNRM of 9.0 dB.
I've now reduced the target SNRM to 7.0 dB, the agc_vref setting to 250 250 200 250, and have increased delay to 3ms while keeping INP at 0. Will post results later today.
On the previous connection I would've lost sync usually long before the 7 hour uptime.