LMS Process - optimal setting for better performance and avoid gc congestion waits

I am having Global Cache congestion on my 4-node RAC cluster where we have many other instances also running. 
ADDM suggests increase the LMS gcs_server_processes from 4 to higher. 
Currently I have 92 cpus/46 cores on my environment.

Finding 2: Global Cache Congestion
Impact is 22.6 active sessions, 36.95% of total activity.
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Global Cache Service Processes (LMSn) in other instances were not processing
requests fast enough.

   Recommendation 1: Database Configuration
   Estimated benefit is 22.4 active sessions, 36.95% of total activity.
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   Action
      Increase throughput of the Global Cache Service (LMSn) processes.