Thank you for the report Phroneris.
I have the pleasure of reporting that Reaper, as of yesterday, has significant performance improvements for video playback and scrubbing.
Head on over to the pre-release forum to check out this new release and report any feedback in the appropriate thread.
For me, working incredibly well are :
Quicktime / Prores Proxy at 540p, 720p and 1080p @23.976, 24, 25 and 29.97 fps. I have yet to test other configurations.
Another user has reported excellent performance with the DNxHD codec.
H264 video is working much better too now, though people editing sound to a video reference are encouraged to use Quicktime Prores or DNxHD. TEncoder64 can produce the Quicktime/Prores Proxy files easily and very quickly.
As soon as these improvements are in a new official release of Reaper, I'll update the WIKI page.
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