#HolosSocial will soon get an update (relay + app). The focus is the sync process, which will be more aggressive through the Bloom filter.
Currently, some activities aren't filtered upstream (mostly undo ones), so the device downloads and processes them for nothing. This was a kind of guardrail that's no longer necessary.
With this release, the device downloads far fewer activities (around 80% of what arrived was useless), so sync will get much faster.