About a month ago I restarted my modem like 10 times to see if it would go from DLM-1 to 8b to 17a profile which was a pretty crazy theory and all I did was go back onto DLM-2 and got higher latency. But this seems to have reset DLM so about a week ago I got DLM-1 back. Just got back from a trip today and noticed the speed was crazy fast so I thought it must of been on 17a. Had a look and it was I couldn't believe it. I think reseting DLM could help as I was on a solid DLM-1 for 5 months and it didn't ever change.