weird, can't find a mention of it anyhere on the release note here: http://www.wine-staging.com/news/2016-04-03-release-1.9.7.html

It's still disabled in the official staging build. It is possible they refactored the patchset to apply on 1.9.7 as that's what the staging people did for 1.9.5. If they did so cleanly perhaps they will push those changes back to the official staging code? Where is this package anyway?

Game: System Shock 2
Installer MD5: 8f6aa89db1efd753210d5f4d24390af1 setup_system_shock2_2.3.0.11.exe
WineHQ AppDB link: https://appdb.winehq.org/objectManager.php?sClass=version&iId=27660
CodeWeavers link: [Codeweavers' SS2 page links to SS2 on Steam, where an official Wine-wrapped version is available for Linux. Like the official Linux releases of so many other games, this is not available on GOG...]

Distro: Linux Mint 17.3 Cinnamon 64bit
Kernel version: 3.19.0-51
Graphics card: Nvidia GeForce GTX 750Ti
Graphics driver & version: Proprietary 364.12
Wine version(s) tested: Wine Staging 1.9.5 via PlayOnLinux, CrossOver 15.1.0

Install notes: Just install & play.
If using PlayOnLinux, run the game from/create a shortcut for "Shock2.exe"
How well does it run: Perfect
Details: Have only done a very quick test however I have previously done a complete playthrough using an earlier version of CrossOver without any issues & there's nothing to suggest things may have changed. Tested with virtual desktop and CSMT enabled.

Cheers. Looking at the build script they don't appear to be doing anything special. It's pulling the tagged staging build from here. Double checking the recent commits shows CSMT is still disabled? I grant you I could certainly have missed something.
More importantly I won't argue with the results. ;)

Also, didn't see a rzip package, but I've seen people use <i>lrzip</i> anyway.

Can't say I particularly doubted your ability to read or enable a check box. (Why does this post ^ lack BLINGING. I was mislead into believing there would be BLINGING in there.)

Just did a stock staging 1.9.7 build. I also have said check box in winecfg and can click it. However, when I run a game I get this for the first few lines on the console:

Game: XIII
Installer MD5s:
c6432f023061d461e7d9875d1b9760ea setup_xiii_2.0.0.11-1.bin
ebee614f8b89718e10365c195d918fa0 setup_xiii_2.0.0.11-2.bin
7fd5bfa985aa67e83b39c6e3a4ee2a94 setup_xiii_2.0.0.11.exe
WineHQ AppDB link: https://appdb.winehq.org/objectManager.php?sClass=application&amp;iId=3776
CodeWeavers link: https://www.codeweavers.com/compatibility/crossover/xiii

Distro: Linux Mint 17.3 Cinnamon 64bit
Kernel version: 3.19.0-51
Graphics card: Nvidia GeForce GTX 750Ti
Graphics driver & version: Proprietary 364.12
Wine version(s) tested: Wine Staging 1.9.5 via PlayOnLinux, CrossOver 15.1.0

Install notes: Just install & play.
If using PlayOnLinux, run the game from/create a shortcut for "XIII.exe"
How well does it run: Perfect (except when it crashes or freezes on startup)
Details: Occasionally crashes/freezes on startup - if this happens, just force close it (if necessary) & try again. Otherwise works perfectly. Tested at 1920x1200 with virtual desktop and CSMT enabled, have only tested for a short while with this version of Wine/CrossOver but have previously played through with an older version without any problems. If running the game with virtual desktop enabled, you must also set "Automatically capture the mouse in full-screen windows". Mouse cursor movement is a bit odd in the menus but otherwise works fine.

Huh, I thought CheckFloatConstants was the fix for that?

*inserts screenshot_from_.jpg with "rapper" bling on Enable_CSMT* except you are supposed to supply the BLING.

Care to add this as an addendum?

The Witcher: Character models are sometimes invisible bug should be fixed in Wine 1.9.5 or later by setting HKCU/Software/Wine/Direct3D/CheckFloatConstants registry key to "enabled".

Done :)