first sorry for my English
i was have mirotik v5.20 cracked x86 and it's working very good with database size 120 Mb and 450 active session
after that i bought CCR1036-12gb-4spf router board and tow CRS125-24G-1S switchs it's very expensive but it's not work good with a larg data base and a lot active user so i have many problems in this device ccr1036-12gb-4s like
1- i can't creat group users more than 300 users in the same time in x86 i creat 999 user in the same time
2- very slow when browsing user manger
3- radius not responding after boot and users can't log in for 3 minute
4- radius not responding when i make backup for database
5-when data-base size be larger than 30 mb radius not responding err in log so every day i remove used cards(user)
6- all the time raduise accounting stop request not sent not response err in log
and many problems so Can any one help me?
or back to x86 v5.20 ?
note: i dont have any problems with x86

Well its better for you to change job, because you will find yourself in serious trouble, when one of your clients realise that his communication is being routed through china...loool!!!