Samuel
Can you provide some context for your performance issues? Detail like:
• what your setup is - OS, hardware, drivers, etc.
The FAQs are a good starting point• what you use Resolve with - the codecs you use, operations like editing/VFX/color, magnitude - timeline sizes, resolutions, number of effects etc...
• what actions were faster and are now slower (and by how much) - opening a project, playback, thumbnail refresh etc...
• what other actions you've taken between betas - Windows upgrades, clean driver installations, additional plugins/OpenFX/other software.
As Peter mentions, we have significant performance improvements between successive betas, so the info could help narrow down where the issue is. If the cause is extrinsic, chances are you'll continue to see the same issue in beta 2 as well.
Having said that, all public beta versions are available if you scroll down the first tab in the
support page