I'm going to share a current experience and state an observation that may be a clue as to why DF is running higher CPU activity in recent betas.
I have a new Dell XPS 8940SE that came with Windows 10x64 Pro. I have two Dell U2719D monitors attached to it. I let this new system upgrade itself to Windows 11x64 Pro. I'm a Windows Insider so I set up the Insider update to Beta to get the latest updates of Windows 11x64 Pro. I've had DF running on it and it has had
very low CPU activity...like 0.1-0.3 CPU usage consistently.
HOWEVER, in one of the beta releases a few weeks back, I completely lost the sound on the system. The sound device hardware was totally dead as if I had removed it from the system. New Realtek drivers updated, checking all settings, etc. but nothing would bring back the detection of the sound hardware. To clarify, this lost sound event occurred BEFORE I installed DF on this system.
I decided to perform a fresh/clean re-installation of Windows 11x64 Pro and all my software. The built-in sound device (driven by Realtek drivers) returned and is now working fine. I've re-installed my cadre of applications, etc., and all is working fine. HOWEVER, now DF is running a high CPU usage of
0.2-2.5, every similar to my Windows 10x64 system on which I am using the ASUS built-in sound device driven by Realtek drivers.
My observation : Perhaps the DF higher CPU usage in recent Beta 12 and 13 may be the result of a conflict with the REALTEK sound drivers, eh?? Unfortunately, I have no data/facts to back up this observation.
As a test, I downgraded to Beta 11 on the new Dell. The CPU usage dropped to 0.09-1.54 similar to my Windows 10x64 system if I downgrade to Beta 11 on it.