I avoid control of computers remotely so your team owns each action, protects credentials, and learns a tuning process it can repeat.
Performance Baseline in SQL Server: Measure Before You Tune
Build a performance baseline in SQL Server with saved waits, file latency, query CPU, and counters before judging a tuning change.
Shredding sp_server_diagnostics Output Into Health Rows
Check shredding sp_server_diagnostics with SQL Server examples, practical queries, clear limits, and steps to verify your own database.