Squeaky_B

🥳 HAPPY DAYS!  🥳
Tested again after seeing this was picked up in the patch notes today (2.9.9.2280)
 
Did the usual, cleared DCS Folder, Ran the full repair, cleared mods out, created a new mission file in the same location as before.
This time however I had 1 group with all the same units and 1 group with different units to test @Gierasimov's post.
Both groups looped several times with no issues!
So happy to say this is fixed.
Thanks devs!
 
1 Tiny thing I did notice is that all of the subordinate units in the group, don't stick to the road when going to Waypoint 0 and instead go directly to it. Not a deal breaker by any stretch of the imagination and just happy they're looping now.
Thanks again.

WOOP!!! Passed the Syria test
My power plan was set to AMD High Performance but had a poke around and here's what I think it was in case it helps anyone in future.
 
As suggested by the beloved @Flappie and of course the beloved @silverdevil.....
 
Go to Power Plan select High Performance followed by Change plan settings

 
The select Change advanced power settings

 
Then under High performance [Active] 
Expand the Processor power management option and make sure it's set to:
Minimum Processor State: 100%
System cooling policy: Active
Maximum Processor state: 100%

 
Then Apply, Ok, all that good stuff.
For me, my minimum was set to 90% and the maximum was set to 95%. (No idea why as the above are the default values apparently)
 
Thank you sooo much chaps, I owe you both a beer/coffee! As you might have just saved me £2K