https://bugs.winehq.org/show_bug.cgi?id=46266
--- Comment #7 from Alistair Leslie-Hughes leslie_alistair@hotmail.com --- (In reply to Sagawa from comment #6)
I sent a patch, https://source.winehq.org/patches/data/155857
Yes, this improved the load/unload messages.
However, the there is still a massive slowdown because there isn't a cache of these values.