we are currently implementing ZIA on over 190 locations. The locations are using NuageNetworks NSG e200/e300 device to establish IPSec tunnels to Zscaler.
On almost all locations we are facing massive speed issues when using IPSec. Most often we get just 50% of the link speed or less; sometimes either upload or download is OK, but never both.
When we are using “plain pac files” everything works perfectly well with full speed.
Has anyone seen similar issues or an idea how to solve this.