Hello @ColbyFulton,
Thanks for the post. I appreciate you sharing your test results. What kind of footage are you testing? Is it on an external drive? If so, how is it connected. I ask because I don't see such problems. Performance is largely dependent on the footage. These days, camera, mobile device, and drone manufacturers release file types that are more and more compressed, like 10-bit 4:2:2 HEVC, for example. Many computers can't even play back those files. So, perhaps I can help you with better performance. A quick troubleshooting step is to press Shift at launch. Delete the media cache. You might also try the new Beta which has performance improvements in the Timeline. Let us know how any further testing turns out.
Thanks, Kevin
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