+ Reply to Thread
Results 1 to 8 of 8
  1. #1
    Luminous Being RobDraw's Avatar
    Using
    MEP 2017
    Join Date
    Apr 2007
    Location
    Connecticut, USA
    Posts
    5,161

    Question True Type Fonts Slowing Down Drawings

    Registered forum members do not see this ad.

    Hi all,

    This is my first post.

    Using ADT3.3/ XP Pro/ P4/ NVIDIA GeForce Vid Card

    I've been researching this problem for a while now and have not been able to come up with a clear reason or simple solution.

    When an XREF has true type fonts, drawings referensing it slow down proportionally. The more objects using TTF's, the slower the drawings get. The reference drawing does not slow down at all. Just the referencing drawings. I know that it is the TTF's because eliminating them "cures" the problem. Although eliminating the TTF's is not too difficult, it is time consuming. The slowness is most noticable when selecting any object and having to wait for the grips to appear. This delay is proportional to the number of objects in the XREF containing TTF's.

    I would like to be able to use the TTF's for consistency as they are on drawings from an outside source that we use for backgrounds. Our workstations, although not super, are relatively new and should be able to handle the added load to the graphics card that TTF's can demand.

    Any information on this issue would be greatly appreciated.

    Thanks,
    Drafting is a breeze.

  2. #2
    Luminous Being tzframpton's Avatar
    Computer Details
    tzframpton's Computer Details
    Computer:
    HP Zbook
    Discipline
    Multi-disciplinary
    tzframpton's Discipline Details
    Occupation
    BIM Specialist
    Discipline
    Multi-disciplinary
    Details
    Full Virtual Design and Construction BIM services for the MEP engineering and construction industries.
    Using
    Revit 2018
    Join Date
    Mar 2006
    Location
    Dallas, TX - USA
    Posts
    9,039

    Default

    I am not familiar with your version of ADT, but try this (this is what i do):

    type QSELECT at the command line, when the dialog box comes up, under Object Type, select MTEXT. under the Operator pull down box, select "Select All" and click OK. this should grab all the MTEXT (which is what TTF fonts are used in) in the drawing, and just EXPLODE it to bring them to a *.shx font file.

    I do this to all my drawings because i don't like not having control of lineweights of text, and also it can cause a performance issue at times, when i have loads of TTF's as well.

    Hope this helps, and welcome to the forum.
    Tannar Z. Frampton ™ | Frampton & Associates, Inc.

  3. #3
    Luminous Being RobDraw's Avatar
    Using
    MEP 2017
    Join Date
    Apr 2007
    Location
    Connecticut, USA
    Posts
    5,161

    Default

    Thanks, but I have been able to eliminate the TTF's by changing the text styles and using a lisp routine to remove the TTF's from individual MTEXT objects. Many of the MTEXT objects in these files have the font assigned individually overiding the font style. (Why they do they do that? I just don't understand that one.) It would save me a lot of time if I didn't have to do that. This particular project is quite large with many XREF's to cleanup with each update. If I knew more about why this happens, I might be able skip that part of the cleanup and use these fonts.
    Drafting is a breeze.

  4. #4
    Forum Deity
    Using
    AutoCAD 2002
    Join Date
    Sep 2006
    Location
    East Sussex, U.K.
    Posts
    4,039

    Default

    Have you tried QTEXT command?

    When this is set to on, all the text is shown by a bounding box, and the actual text does not have to be regenerated each time.

  5. #5
    Forum Newbie
    Computer Details
    Polisson's Computer Details
    Operating System:
    Windows
    Using
    AutoCAD LT 2014
    Join Date
    Aug 2013
    Posts
    2

    Idea

    Thread has 10 years old! Did you know, that since last post in this discussion, users didn't came with reasonable solution across all of the Internet? Issue persists in Windows & AutoCAD world.

    I've found main cause of laggy select xrefs with TTF's.
    The solution is simple:
    all MTEXT objects should have using basic TTF's from Microsoft (like Arial, Tahoma, Verdana),
    or additional, special font is used must have installed all types (normal, bold, italic).

    Example: xref has layer with 2,5k MTEXT objects with font EFN Technic set by textstyle with italic option. If your windows has this font only as bold type, AutoCAD has to render it so selection cause lag.

    BTW other CAD apps, doesn't have any similar effects and work smoothly.

  6. #6
    Luminous Being RobDraw's Avatar
    Using
    MEP 2017
    Join Date
    Apr 2007
    Location
    Connecticut, USA
    Posts
    5,161

    Default

    Quote Originally Posted by Polisson View Post
    Thread has 10 years old!
    But you had to dig it up from the dead.
    Drafting is a breeze.

  7. #7
    Senior Member
    Computer Details
    iconeo's Computer Details
    Operating System:
    Windows
    Discipline
    Multi-disciplinary
    iconeo's Discipline Details
    Occupation
    CAD Manager/Draftsman
    Discipline
    Multi-disciplinary
    Using
    AutoCAD 2017
    Join Date
    Jun 2007
    Location
    Seattle
    Posts
    259

    Default

    Which is why AutoCAD needs to be multithreaded and will eventually just be left behind.

    Sent from my SM-G930T using Tapatalk

  8. #8
    Luminous Being RobDraw's Avatar
    Using
    MEP 2017
    Join Date
    Apr 2007
    Location
    Connecticut, USA
    Posts
    5,161

    Default

    Registered forum members do not see this ad.

    This horse is dead. Please move on.
    Drafting is a breeze.

Similar Threads

  1. Viewports regeneration Slowing computer
    By Hardney in forum AutoCAD Drawing Management & Output
    Replies: 1
    Last Post: 28th Nov 2006, 05:01 pm
  2. Blocks slowing drawing down..!
    By JBullseye74 in forum AutoCAD Drawing Management & Output
    Replies: 0
    Last Post: 10th Oct 2006, 03:42 pm
  3. AC$ files slowing down opening drawings
    By ChrisHawkes in forum AutoCAD Drawing Management & Output
    Replies: 10
    Last Post: 17th Jun 2006, 04:34 pm
  4. Unable to locate a true type font in CAD
    By hyposmurf in forum AutoCAD Drawing Management & Output
    Replies: 4
    Last Post: 3rd Feb 2004, 02:43 pm

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts