You are maintaining a high-frequency trading application written in Java experiencing intermittent latency spikes (GC pauses). Analyze the potential causes of these pauses within the G1 Garbage Collector. Propose a specific set of JVM flag adjustments to target a maximum pause time of 10ms, explaining the impact of modifying `Region size`, `InitiatingHeapOccupancyPercent`, and `MaxGCPauseMillis`. Additionally, describe how you would analyze the GC logs to verify that your changes have reduced 'Stop-the-World' events without increasing CPU overhead significantly.