Load balancing challenges

Hello,
we currently have 2 publishers at our site. They frequently connect to different NetSkope datacenters (A and B) with similar RTT, which is working as designed. However, the majority of our users are routed to datacenter C, and here we are noticing a discrepancy. Around 80% of the traffic is being routed through only one publisher because it is the only one falling within the (Latency range: 0-31 ms). It seems that even a minimal difference in latency - if it unluckily falls near the threshold of this range - causes the traffic to skew heavily toward a single publisher. Do you have any recommended solutions or workarounds for this behavior?