reorganize application pool and sharepoint web applications solve app crash!!!!!

hi every body 

recently i ask a question below

 https://social.msdn.microsoft.com/Forums/office/en-US/b2550336-1a85-428f-a2f7-a5d0be514ded/application-pool-crash?forum=sharepointadmin

@will (he) answered me and lead me to iis problems.

for that problem i check everything.

so what I say in that thread i got stuck in application pool crash and event viewer show CLR dll in .net frame work as fault module.

I worked a lot and search the internet but i couldn't find any useful.

i checked all logs in sharepoint and iis and event viewer(i said in previous thread) but i didn't find my problem

i install debug diag software and try to make dump file but it isn't any information mini dump file like this:

Entry point   ntdll!RtlUserThreadStart+34 
Create time   11/12/2016 1:55:58 AM 
Time spent in user mode   0 Days 00:00:00.00 
Time spent in kernel mode   0 Days 00:00:00.00 
This thread is not fully resolved and may or may not be a problem. Further analysis of these threads may be required.

Function   Source 
ntdll!NtWaitForSingleObject+a    
KERNELBASE!WaitForSingleObjectEx+94    
clr!GetMetaDataPublicInterfaceFromInternal+8d67    
clr!GetMetaDataPublicInterfaceFromInternal+8d1f    
clr!GetMetaDataPublicInterfaceFromInternal+8ce0    
clr!TranslateSecurityAttributes+1548a2    
clr!TranslateSecurityAttributes+154c8f    
kernel32!BaseThreadInitThunk+22    
ntdll!RtlUserThreadStart+34 

I searched about functions that called 

i search about that but i can't find any usefull thing.

I decided raise the RAM of the server 

the previous resource is 24 GB and now it is 40GB

I tought this resource is ok but the crash application pool persist.

i decided to divide application pool i have 5 application pool and every app pool contains 1 to 4 web application(some of them one some of them 4). i create 8 application pool .some of them contains 1 web application.

i suprise when the next day i don't have any crash in application pool!!!!!

more application pools is better!!!!!????