Now, since latest dev-blog recommends switching to DX12, I believe this issue needs some more attention.
In nutshell: if you quit one of 2 currently open EVE Online windows (both omega ofc) while you use DX12, the PC will freeze till next GPU adapter re-init.
For trolls: this has been reproduced on 2 fully different PCs, with 5 minute fresh Windows 11 install. This also has been reported and even escalated to the seniors (requests 2187728 and 2175590).
So, the DX12 is not playable when multiboxing, I should keep my launcher to use DX11 .
Issue is not mine alone, similar people are reporting the same behavior across multiple sources:
And many more (will post more in comments)
So what I can conclude - I just reproduced the freeze today with DX12 on 23H2, 12th Gen Intel(R) Core™ i9-12900K 3.20 GHz, 64,0 GB (63,7 GB usable), 3080 Ti.
Please, CCP, we cannot use you’re recommended settings. Investigate please.