Bartokomus

You also are accepting zero actual risk in all this.  This entire issue comes down to risk/opportunity for BFC.  While for you it is entertainment and convenience.  Those are entirely different frameworks.
The opportunity for BFC is modest - DLCs do not make as much money as main title releases so ROI is limited.  They also have multiple lines of product, so they can offset any losses by shifting focus to offset lost investment in development.  The risk for BFC, in this environment, is significant.  Beyond the fact that releasing a wargame set in an active war zone (there are actual game maps that overlap RL) while people are dying, is going to be considered “bad taste” by most and “a social crime” by some - companies have been cancelled for less.  The risk of significant loss due to perceived exploitation of human suffering is high.
This is existential for BFC.  It is their livelihood.  Are you willing to personally pay for the financial damage this move could do to the company?  Are you willing to put your job on the line for a CMBS DLC?  Because that is what you would be asking BFC to do.  BFCs job is not to make you happy.  Their job is to sustain the business that makes you happy.  Right now risking everything on a single DLC does not make business sense. 

-specify how many and what type of rounds in an arty call
-a follow command for vehicles
-ability to process huge battle turns in a reasonable time frame

The bottlenecks are: a) CPU (single core speed); and 2) OpenGL. I noted load times in CMBN (oldest and slowest title) and using MSI Afterburner - looked at the CPU and GPU loads along with GPU MEM utilization both on the old and new systems. Can't find my notes from that time! 😞
I was satisfied once I realized that no scenario was never going stress the GPU. I have what is now considered a rather pedestrian GTX 1660-6GB card.
I'm a recent NVidia convert and can attest that they provide better support for OpenGL which always annoyed me about AMD. AMD has a knack for providing even worse drivers. Wonderful hardware but their drivers are near useless.
Otherwise, any difference will be attributable to single core clock speed of the CPU.
What are your system specs? I'm sure you can get a few others here to run comparables for you.
Some numbers for you... There are other similar posts in the forums if you wish to search.
 

that would be an amazing "what-if" to play, i'd pay for it 😉