I have tested the DXO Nik Collection 5 with ACDSee Ultimate 2023 and am happy to report that all plugins work in edit mode, except for Perspective FX (select plugin but nothing happens). This includes Viveza, which has never worked with Ultimate. DXO has updated the interface on the majority of their plugins, and before Nik Collection 5 this new interface did not work with ACDSee. Interestingly enough I also tested Viveza with Ultimate 2022 and it worked there as well, so this appears to be a DXO fix. There were complaints about the new interface for the Nik Collection not working with Affinity, so my guess is that since so many people use the Nik plugins with Affinity that DXO decided to address this, which also benefits Ultimate. Note that the ACDSee website has not been updated indicating this support.