Don't troubleshoot problems on your server by looking at total waits. If you want to troubleshoot what is causing you problems, then you need to look at current waits. You can do that by either querying sys.dm_os_waiting_tasks or by grabbing all waits (like you did above), waiting for 1 minute, grabbing all waits again, and subtracting them to see what waits actually occurred over that minute.
See the webcast I did for more info: Troubleshooting with DMVs
That aside, HADR_LOGCAPTURE_WAIT is a background wait type and does not affect any running queries. You can ignore it.