lnd: lower default CLTV delta from 144 to 40 #2759
In this commit, we lower the default CLTV delta from 144 (1 day) to 40
In this commit, we lower the default CLTV delta from 144 (1 day) to 40 blocks (~7 hours). We do this as the initial value was purposefully very high, and was only in place as place holder in earlier versions of the software. Such a high value can also discourage path finding algorithms from taking lnd paths due to the negative impact of CLTV value in widely deployed heuristics.