I am planning to have two WAN connections using two different UK cell phone networks.

The networks bandwidths and latencies can wary considerably depending on time of day, cell tower usage, etc.

The load balancing function for TL-R605 is described as below:

The multi-WAN Load Balancing function distributes data streams according to the bandwidth proportion of every WAN port to raise the utilization rate of multi-line broadband.
 

The description doesn't state if the load balancing is static or dynamic.

Because the bandwidth of my WAN connections will vary considerably during the day, is the load balancing smart enough to automatically detect the available bandwidths and adjust routing accordingly?

Thanks.