They might be related to BG3 as well, since I don't have these issues with other games (e.g. see GOG 62G download for patch 3).

But yes, should also let the distribution platform (e.g. GOG) know, as sometimes it's on their end, such as these related 2.0.26 Beta (December 4, 2020) updates to GOG Galaxy client:
Quote

General:
* [Windows] Fixed GOG GALAXY updates on non-admin accounts
...
Overlay:
* Fixed a crash in Baldur's Gate 3 when using the overlay in Vulkan mode