Fcgid warnings (Broken pipe and Connection reset by peer)

I'm desperate. Getting these errors in my VPS and just can't solve them, even the hoster can't. How?

[Thu Jan 05 19:19:24.436579 2017] [fcgid:warn] [pid 7765] (32)Broken pipe: [client 79.22.6.175:57940] mod_fcgid: ap_pass_brigade failed in handle_request_ipc function
[Thu Jan 05 19:20:10.212129 2017] [fcgid:warn] [pid 7913] (104)Connection reset by peer: [client 79.53.74.142:29987] mod_fcgid: ap_pass_brigade failed in handle_request_ipc function

My fcgid configuration:

FcgidIdleTimeout 60
FcgidProcessLifeTime 3600
FcgidMaxProcesses 4096
FcgidMaxProcessesPerClass 256
FcgidMinProcessesPerClass 0
FcgidConnectTimeout 30
FcgidIOTimeout 3600
FcgidInitialEnv RAILS_ENV production
FcgidIdleScanInterval 30
FcgidBusyScanInterval 120
FcgidZombieScanInterval 3
FcgidMaxRequestLen 1073741824
FcgidBusyTimeout 3600
FcgidInitialEnv PHP_FCGI_MAX_REQUESTS 0
FcgidMaxRequestsPerProcess 0
FcgidOutputBufferSize 0

My hoster says this problem happens because users close the page without really seeing it, so it's not server's fault... Is it true?

/* Now pass any remaining response body data to output filters */
if ((rv = ap_pass_brigade(r->output_filters,
brigade_stdout)) != APR_SUCCESS) {
if (!APR_STATUS_IS_ECONNABORTED(rv)) {
ap_log_rerror(APLOG_MARK, APLOG_WARNING, rv, r,
"mod_fcgid: ap_pass_brigade failed in "
"handle_request_ipc function");
}

return HTTP_INTERNAL_SERVER_ERROR;
}

What do you think about increasing the value of these 2 parameters? I know it's suggested, but i don't know what is the max value i can set...

FcgidInitialEnv PHP_FCGI_MAX_REQUESTS 0
FcgidMaxRequestsPerProcess 0