// Module included in the following assemblies:
// * scalability_and_performance/routing-optimization.adoc
// * post_installation_configuration/network-configuration.adoc

[id="router-performance-optimizations_{context}"]
= Ingress Controller (router) performance optimizations

{product-title} no longer supports modifying Ingress Controller deployments by setting environment variables such as `ROUTER_THREADS`, `ROUTER_DEFAULT_TUNNEL_TIMEOUT`, `ROUTER_DEFAULT_CLIENT_TIMEOUT`, `ROUTER_DEFAULT_SERVER_TIMEOUT`, and `RELOAD_INTERVAL`.

You can modify the Ingress Controller deployment, but if the Ingress Operator is enabled, the configuration is overwritten.