When I built from your master branch, I built a Release x64 build. But nonetheless, testing between GZDoom 4.2.4 and 4.3.0 release builds from Github demonstrates the performance issues. I even
commented on the perf issues on release.
I'm happy to test again and provide logs/data but I just don't get great performance of the Carmack renderer on SoftPoly vs running it direct/over OpenGL. My experience to sum it up is basically that 8-bit SoftPoly from 4.2.x runs as fast on stock maps as the Carmack renderer and that SoftPoly running the Carmack renderer nowhere near as fast as just running the Carmack either over OpenGL in GZDoom or D3D9 in LZDoom.
Perhaps I should take this to a different thread if you want to keep talking about it? I only raise it because I find the upcoming changes for LZDoom surprising just from my own perf experiences, didn't mean to take the release notes off-topic.