Interpret RDS User Input Delay as the slowest queued input in the interval

Source facts

The User Input Delay counter measures the time an input waits in a queue before a process handles it, and it applies to both local and remote sessions. Microsoft specifies that the reported value is the maximum delay within the configured interval, rather than the average of all inputs. The tool offers process-level and session-level counters. Microsoft documentation.

Applicability

Check the source’s counter-specific platform requirements and configuration notes. Identify the affected user session, application, observed time, and collection interval before comparing a reported value with a user complaint.

DSE recommendation

Choose the process or session scope that matches the complaint and record its identity. Ask the application owner to provide a repeatable interaction and a description of acceptable response. Retain the input-delay series alongside resource measurements from the same window.

Verification

Reproduce the interaction and correlate its timing with the maximum delay reported for the selected scope. Compare a normal and degraded run under known conditions. Preserve the interval and instance identifiers, and investigate the association without treating one delay spike as proof of a particular resource bottleneck.

Official references

Microsoft Learn: Use performance counters to diagnose application responsiveness problems on Remote Desktop session hosts. Source reviewed September 8, 2026.