Screen hangs on Entering Raid for upto 60 seconds

I start a raid and 5-10 seconds in game freezes for just over 30 seconds then game works sweet as for rest of raid. This is constantly happening on every raid. Have rebooted a few times no change. Only just started happening about 3 days ago

Sorry my bad changed it to a month expirey, note is every so often now not on each raid.

Think we can close it havent had a instance lately either there was a patch or its related to other factors as I havent had any further occurances.