UI is non-responsive for about 30 seconds after SaveAs. This is just a simple 200Kb DXF file.

This showed up with 2023 SP1 (for what it is worth I went from 2022 sp4 directly to 2023 sp1).

Seems like there should be a "direct to developers" reporting channel rather than a user forum for reporting what seem to be program bugs/issues. On a positive note they did fix their "closing last drawing automatically maximizes windows" behaviour from 2022 :).