I've just seen this on a monster machine with 8 cores and a Quad 2, but only when Arena was minimised. CPU usage halved. 
Check your power throttling settings in Windows. I've now turned mine off so that cpu power is always 100% but haven't been able to check if it's worked (it's 200 miles away from me).
			
			
									
									
						Blackmagic duo 2 - Output drop frames
- Bassindaniel
 - Posts: 158
 - Joined: Tue Dec 05, 2017 16:49
 
Re: Blackmagic duo 2 - Output drop frames
Adding 1ms delay to output via advanced window solved this issue.
almost completely
			
			
									
									
						almost completely