https://bugs.winehq.org/show_bug.cgi?id=47720
--- Comment #6 from Scott shagooserver@gmail.com --- I have done further testing of a 6 channel 2.4GB DTS file this time including a on newer more powerful PC which prior to the test did not have wine installed. So it's a new wine ver 4.15 wine installation on a fairly new machine. To clarify, the previous results of Windows and Ubuntu are the same physical machine, ie, a dual boot setup. The new Ubuntu machine is an entirely different piece of hardware.
The results are: Windows 3:11 First Ubuntu 5:39 New Ubuntu 5:02
I can only assume that you must be using small test files.
Would you please run your test again using a multiple gigabyte, 6 channel DTS file please.
There are other issues with ATMOS AC3 files but that can be addressed later.