It's not one database so file groups wouldn't work, it's a Sharepoint farm with each content DB at the best practice limit of 200Gb, I'd rather have everything backedup all at once.  We changed some of the VM settings and brought the backup time down further, the settings changed were the queue length:

http://longwhiteclouds.com/2016/05/24/performance-issues-due-to-virtual-scsi-device-queue-depths/
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\pvscsi\Parameters\Device]
"DriverParameter"="RequestRingPages=32,MaxQueueDepth=254"

Then on to of that the stiping to 4 disks with 8 files, the disks are on multiple LUNs, I got a 11 minute backup I had at the beginning of the week for 87Gb down to 3 minutes.

Now all I need to do is get the time for CHECKDB down, might post something seperate for that.