See the last sentence in the post, quoted below and my last post.
Neither of the BankGroupSwap options should be touched, unless 1 DPC SR modules are used.
The post that got Cluko's querying The Stilt was this post
. The Stilt used dual rank RAM, 1 dimm per channel (A2 & B2), so he used UEFI defaults basically, ie BGS [Auto] = Enabled, BGSA [Auto] = Disabled.
Then see every other timing setup The Stilt has posted for single rank 1 dimm per channel. UEFI 9943 did not have BGSA option but by default it is off, his app did not show it then, link
. This post has 3200/3333 safe/fast timings and RTC updated, link
Then where members with say single rank 2 dimm per channel have asked The Stilt, the recommendation is as stated before in my post