TURBO - switch AutoCAD or LT to faster mode
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The TURBO toggle switches AutoCAD 2026, 2025, 2024, 2023,
2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013,
2012, 2011, 2010, 2009, 2008 or 2007 to a faster mode by
presetting a couple of relevant system variables. The next
TURBO command then switches (toggles) AutoCAD back to its
original status (settings).
Since version 1.11, AutoCAD LT (2024+) is supported.

The active "Turbo" mode is indicated by red commandline
text (or background). Return back to "normal" mode in the
same session to restore the original settings. If you exit
AutoCAD or your DWG drawing in the Turbo mode, some of your
original system variable settings may be lost.

The performance differences depend on your current settings,
on the complexity of your drawing and on the PC configuration.
You can expect maximum "Turbo" effects on slow PCs with poor
existing settings and in emulated/virtualized environments.

APPLOAD the VLX file and run the TURBO command.

NB:
The TurboOpt command displays the values applied in the
TURBO mode. You can preset your own list of variables
through the LISP command:

(setq TurboFastVarList '(
  ("CmdLine.BackColor" . "12040190") ;special color "var"
  ("TextWinTextColor" . 255) ;special "variable", text color
  ("VIEWRES" . 800) ;special "variable", zoom viewres
  ("DYNMODE" . 0) ;list of your variables starts here
  ("DYNTOOLTIPS" . 0)
  ...
))

NB:
The Turbo0 command forces all the "turbo" system variables
back to factory defaults (e.g. when your Turbo toggle is
out of sync).
You can also preset this list with your own values - see:
(setq TurboResetVarList '( .... ))

NB:
you can preset "(setq skipVISUALstyle T)" to avoid
switching the visual style (not restored)


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