USB 2.0 has a latency of about 125 microseconds. By improving its communication model USB 3.0 succeeded in reducing the transmission latency to about 30 microseconds but in both (USB 2.0 and 3.0) cases latency is still very low.

This is in combination with our PTZ cameras. USB signal is a compressed signal and where we have compression we have latency! (plus, more compression will be added if the available bandwidth is reduced)

The signal resolution will also impact the latency result, if you experience lagging video you should try a lower resolution

In general it should not be noticed any lag with low latency cameras but the situation will also depend on possible added USB devices like a hub however, if good-quality, it should not add too much latency, only few milliseconds. More latency might be added on the other end where the decoder is, like with laptops where the amount of latency added will depend on their hardware configuration (CPU and GPU type and speed; RAM amount, type, and speed; system bus speed; hard drive type and speed; ..) but also the memory-intensive programs run on the laptop so close as many as possible!

If you use the USB camera for a remote video conferencing, the latency experienced on the other end will then depend on the internet connection

* Be sure to run the latest firmware in your USB camera.