I want to see how the community may have fixed this problem instead of support.
I have a fairly powerful machine,
i7-6700
16gb DDR4 2400mhz
GTX 1060
Yet I experience severe lag and choppiness in the preview window and timeline.
All my clips are stored on an m.2 SSD with incredible speed, they're gaming clips recorded with NVidia shadow play. Here's the details of them
1920 by 1080 with a data rate of 20202kbps a bitrate of 193kbs. The frame rate is 60. They're ALL of course Mp4.
Hopefully Tech smith adds a way to lower preview qual but until then what's your fix?
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- annoyed
Posted 2 years ago
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Actually, it convert's any footage placed on it to 30fps. 1/2 the frames ore discarded.That conversion seemed to create a lot of problems in Camtasia 8 but not so much In Camtasia 9.
Have you updated your NVidia drivers lately?I don't really think that's it but it's worth a try.
I don't record gameplay normally but I do so for testing purposes. I have some Shadow Play footage that's captured at about 2 1/2 times the quality of yours.

I'm running the latest version of Camtasia 9.1.2 and the playback is surprisingly smooth. There's a few callouts and and other elements thrown in to slow it down. But it plays through them smoothly as well.
Dell Computer SPECS.
XPS 8700
Windows 10, 64-bit, English EA - -
4th Generation Intel Core i7-4770 processor (8M Cache, up to 3.9 GHz)
16GB RAM Dual Channel DDR3 1600MHz - 4 DIMMs EA - -
NVIDIA GeForce GTX 660 1.5GB GDDR5 EA - - Supporting 4 Displays
2TB Barracuda 7200 RPM SATA Hybrid Drive 6 .0 Gb/s 1 EACH –
2TB Barracuda 7200 RPM SATA Hard Drive 6 .0 Gb/s 1 EACH –
1TB Barracuda 7200 RPM SATA Hard Drive 6 .0 Gb/s 1 EACHRegards,Joe
You may want to contact tech support. Bring up this post and my smooth playback. I can also playback 60fps footage from my DSLR smoothly. But I probably wouldn't edit it in Camtasia, I have Premier Pro which doesn't discard 1/2 the frames.

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- 9 Posts
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kayakman, Champion
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on menu ... edit/preferences/advanced, under hardware acceleration, try software only mode
does that work?
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i7-6700K 4.0 GHz with 32.0 GB of RAM, NVIDIA GeForce GTX 1070 graphics card. I'm struggling with a choppy timeline.
kayakman, Champion
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is the project heavily edited?
- 2 Posts
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kayakman, Champion
- 7222 Posts
- 2414 Reply Likes
suggest you contact free tech support; perhaps they can figure it out
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