Your lucky to have FIOS1 at all. Its only available for a few areas. They did decide to develop one for LI to compete with the cable companies.
There were a number of NYC people complaining that they couldn't see the LI FIOS1 and so it was added.
What other issues are you unhappy with?
Channel content will vary by provider and area.
Not sure of the issue with programming DVR.
You use the guide to find the program you want to record.
Ht the record button.
If you hit it again, you can schedule it as a series.
If you are having DVR conflict, that means you are trying to record more programs than you have tuners available.
What DVR do you have?
Yes, others have commented ont he delay. I have found it to be a second or less. Annpying if you can hear both TVs, but not a big issue to go from room to room IMHO.
You can set STB to change to a specific channel similar to recording. Use guide to go to specific show.
Hit OK button.
Go down to Set Reminder.
Will ask if you want this box or all boxes.
Unfortunately there is not a way to schedule for a specific show daily.
Have to do them one at a time.
For caller id, have you tried rebooting router and STB? Sometimes that helps.