+ AA6YQ comments below
I disabled the automatic startup (via Task manager) of all (14) Windows applications, and rebooted Windows (normal); Lookup
response time has not improved; still takes 4-5 seconds w/hourglass.
I use only Windows Defender. It shows NO History of quarantine. No history at all.
What to try next ?
+ Try temporarily disabling Windows defender. Also disable your firewall application.