https://bugs.winehq.org/show_bug.cgi?id=46471
--- Comment #5 from noabody@yahoo.com --- Those options don't seem to affect the problem. K10 has PNI "Prescott New Instructions" which, apparently, is an alias for SSE3.
The environment variables don't have any effect. Through the last few weeks of trouble-shooting, I pulled the sources for wine, nettle, gnutls and tried to find any indication of machine specific optimizations that may have flowed to the global repository and then to me.
I have, thus far, been unable to locate any such optimizations. Debian variants make it relatively easy to rebuild source packages with:
sudo apt build-dep gnutls28 apt --build source gnutls28
Of the resultant debs, the only one that was originally installed on my system was libgnutls30, as shown in the logs. One could presume that, by building the package locally, then manually overwriting libgnutls30, any question of compiler optimizations would be ruled out. This cannot be done without a force install via dpkg because of a changelog conflict. I suppose I could host a local repo with said files but, since they are core to my system, I'd be running the risk of breaking it.
That still wouldn't address the fact that my repository version of gnutls works with wine-stable and not staging within the exact same prefix. Granted encryption stubs in stable may have been replaced with an implementation in staging and that could explain the disparity.