I experience the same issue with call forwarding lag. It's pretty horrendous.
I find that the SMS experience is pretty shoddy at times as well. >75% of the time I try to send an SMS in GV, I get a "SMS has failed" error and have to retry a few times to get it to go through. Incoming SMS also often lag by 15-30 minutes.
I find that the SMS experience is pretty shoddy at times as well. >75% of the time I try to send an SMS in GV, I get a "SMS has failed" error and have to retry a few times to get it to go through. Incoming SMS also often lag by 15-30 minutes.