Warning: BIOS 4.01 appreciation post
4.01 solved all battery drain problems with 180W whan in Balanced mode and solved all the stuttering mess I had with the 240W Delta brick.
Running latest Windows (Atlas OS to be exact), 2.06 Framework OEM drivers (but Adrenaline updated to 25.10.01 optional in order to play Battlefield 6).
Issues persist using 140W Baseus charger, but 1) it’s not officially supported if you have the dGPU and 2) avoiding stuttering is possibile by using “Maximum efficiency” power plan or limiting the total TDP to ~60/65W using “Framework Control Center”, so not perfect but acceptable.