Windows 7 + ATI + Stuttering Output: Difference between revisions

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(Created page with "'''This applies to Windows 7 and MXWendler version 5.0+ and with ATI/AMD graphics''' ''Problem:'' * You have an output window that fits exactly the output device and video ou...")
 
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''Problem:''
''Problem:''
* You have an output window that fits exactly the output device and video output is stuttering:
: You have an output window that fits exactly the output device and video output is stuttering:


''Test:''
''Test:''
* Create output window without window decoration and exact position and size of secondary output
: Create output window without window decoration and exact position and size of secondary output
* Open MXW, play video. The video out stutters when playing video.
: Open MXW, play video. The video out stutters when playing video.


''Solution:''
''Solution:''
* Create a display group using the Catalyst Control Center
: Create a display group using the Catalyst Control Center
* Display group must contain primary ''and'' secondary monitor
: Display group must contain primary ''and'' secondary monitor
 
OR
OR
 
: Make output window eg. 1 pixel larger than needed, eg. 1921x1080 for Full HD
* Make output window eg. 1 pixel larger than needed, eg. 1921x1080 for Full HD


''Background:''
''Background:''
* ATI/AMD interprets accelerated fullscreen windows as games and changes the display swap timing to achieve minimal latency times which are important for games. This cannot be turned off separately.
: ATI/AMD interprets accelerated fullscreen windows as games and changes the display swap timing to achieve minimal latency times which are important for games. This cannot be turned off separately.
 


''Comment:''
''Comment:''
* NVidia systems may be affected, too.
: NVidia systems may be affected, too.

Revision as of 10:49, 19 March 2019

This applies to Windows 7 and MXWendler version 5.0+ and with ATI/AMD graphics

Problem:

You have an output window that fits exactly the output device and video output is stuttering:

Test:

Create output window without window decoration and exact position and size of secondary output
Open MXW, play video. The video out stutters when playing video.

Solution:

Create a display group using the Catalyst Control Center
Display group must contain primary and secondary monitor

OR

Make output window eg. 1 pixel larger than needed, eg. 1921x1080 for Full HD

Background:

ATI/AMD interprets accelerated fullscreen windows as games and changes the display swap timing to achieve minimal latency times which are important for games. This cannot be turned off separately.

Comment:

NVidia systems may be affected, too.