@andrewgrieves No they are not. Here are somethings that may help.
Check your Internet.
Check your memory to minecraft if you have it at 2gs may need to move it to 4-6gbs if you have that.
Try our launcher hc.to/laucher <- Link
--Global PVP Enabled, Dungeons have PVP off (for now!)
-> Global pvp re-enabled to all server. Town TnTing and raiding all a go! Dungeons will have pvp off for the current moment. Newer higher level dungeons on the way with PVP active in future upcoming patches.