# Sound lags behind playback cursor

**URL:** <https://forum.csound.com/t/sound-lags-behind-playback-cursor/562>\
**Category:** Blue\
**Created:** [November 4, 2021, 8:21pm UTC](https://forum.csound.com/t/sound-lags-behind-playback-cursor/562 "2021-11-04T20:21:12Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![fm42](https://forum.csound.com/letter_avatar_proxy/v4/letter/f/bc79bd/32.png) [@fm42](https://forum.csound.com/u/fm42)\
**Post date:** [November 4, 2021, 8:21pm UTC](https://forum.csound.com/t/sound-lags-behind-playback-cursor/562/1 "2021-11-04T20:21:12Z")

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Hi! I’m new to Blue and it looks promising. Did the 1st tutorial and got it working but noticed that when I press the play button the playback cursor starts to move immediately while the sound output lags about 1/2 second behind. No I would not mind the lag if the cursor and the playback would be in sync. Is there something I can do to get them in sync?  
Thanks  
Frank

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**Author:** ![stevenyi](https://forum.csound.com/user_avatar/forum.csound.com/stevenyi/32/4_2.png) [@stevenyi](https://forum.csound.com/u/stevenyi)\
**Post date:** [November 4, 2021, 8:37pm UTC](https://forum.csound.com/t/sound-lags-behind-playback-cursor/562/2 "2021-11-04T20:37:25Z")

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Try going to realtime render settings in Blue’s program options and setting -b to 256 and -B to 1024. BTW: Which OS are you using?

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<div class="post-metadata">

**Author:** ![fm42](https://forum.csound.com/letter_avatar_proxy/v4/letter/f/bc79bd/32.png) [@fm42](https://forum.csound.com/u/fm42)\
**Post date:** [November 4, 2021, 10:12pm UTC](https://forum.csound.com/t/sound-lags-behind-playback-cursor/562/3 "2021-11-04T22:12:15Z")

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I am on Widows 10. I tried these settings but I get very distorted output for the 1st 3 seconds or so so I reverted back to -b 4096 and -B 16384. I did find a latency setting in the Playback panel. I set this to 0.5 and it seems pretty in sync now.  
Thanks F