Starting with Resilio Connect v.3.2.1, an error saying the following may appear
Your speed limit is too low for the ZGT or other uTP protocols to work correctly and could cause slow and stalled Jobs. Raise the speed limit the Bandwidth scheduler or review the available speed limit in License details.
ZGT protocol, uTP and uTP2 are smart protocols and automatically adjust to network changes to provide full bandwidth available at the moment. However, if the configured speed limits are too slow, the protocols cannot work optimally, as a result the job may stuck. Minimal advisable speed limit is 1 Mbps for these protocols. It may be required to be higher for some environments. Please contact support if the error is reported for the maximum speed limit acceptable for your setup.