estatsd impact the chef server performance and estatsd can not be disabled by estatsd['enable'] = false

I encounter 2 issues, anyone have any idea?

1. estatsd can not be disabled by estatsd['enable'] = false
2. estatsd impact the chef server performance badly when setting to emit metric to server other than localhost, got error like this:
   2018-05-22 13:48:37 =CRASH REPORT====
   crasher:
   initial call: stats_hero:init/1
   pid: <0.1748.0>
   registered_name: []
   exception exit: {{timeout,{gen_server,call,[<0.1030.0>,{send,[[[["chefAPI",".application.allRequests"],58,"1",124,"c","\n"],[["chefAPI",".","",".allRequests"],58,"1",124,"c","\n"],[["chefAPI",".application.byRequestType.","clients",".","GET"],58,"1",124,"c","\n"]]]}]}},[{gen_server,init_it,6,[{file,"gen_server.erl"},{line,352}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,240}]}]}
   ancestors: [stats_hero_worker_sup,stats_hero_sup,<0.1020.0>]
   messages: []
   links: [<0.1044.0>]
   dictionary: []
   trap_exit: false
   status: running
   heap_size: 987
   stack_size: 27
   reductions: 2626
   neighbours:
   2018-05-22 13:48:37 =SUPERVISOR REPORT====
   Supervisor: {local,stats_hero_worker_sup}
   Context: child_terminated
   Reason: {timeout,{gen_server,call,[<0.1030.0>,{send,[[[["chefAPI",".application.allRequests"],58,"1",124,"c","\n"],[["chefAPI",".","",".allRequests"],58,"1",124,"c","\n"],[["chefAPI",".application.byRequestType.","clients",".","GET"],58,"1",124,"c","\n"]]]}]}}
   Offender: [{pid,<0.1748.0>},{id,stats_hero},{mfargs,{stats_hero,start_link,undefined}},{restart_type,temporary},{shutdown,brutal_kill},{child_type,worker}]

Start by tracing the estatsd configuration, especially estatsd['enable'], and the stats_hero worker shown in the crash report. Reproduce the disabled setting and the timeout when emitting metrics to a non-localhost server. Done means estatsd can be disabled and metric delivery failures no longer badly affect Chef Server performance.