This should not be a problem with SSD disks, whereas traditional HDD should be accounted for: typical sustained read rates for a well tuned system with a 7200rpm hard disk should hover around 120 MB/s or 960 Mbit/s. The latter should be enough for a typical 1 Gbit/s network uplink.
We have a policy for contributions related to security. Please refer to <a target="_blank" rel="noopener noreferrer" href="https://github.com/Chocobozzz/PeerTube/security">our security policy and advisories</a>.
Framasoft will therefore takes the time to improve the software progressively, at its own pace and with its atypical methods which, so far, have proven to be rather effective.