Each Sensor model has a limited throughput. For example, consider the Trellix IPS NS7500 Sensor with a 3Gbps capacity license applied. The Sensor is rated at 3Gbps performance. With the Gigabit interfaces it is theoretically possible to cross the limit. What happens in this situation? Will it throttle the throughput to 3Gbps or will you just lose the IPS functionality for everything more than 3Gbps?
The answer is that the Sensor will drop packets irrespective of the TCP flow violation settings. We also have the latency monitor feature where the Sensor can inline-forward traffic without IPS inspection if it crosses the limit. There could also be false negatives and the traffic might experience high latency.
It is very important that you stay within the operating parameters of the device you deploy. If you are actually running at gigabit speeds, you should probably be running an NS9100/NS9200/NS9300/NS9500/NS9600 Sensor, which all have a much higher throughput.