[Private200]

Try to check your commands witch probably are the ones that makes the lag / crash . Sure that the commands are not the only lines that make the crashes . Check your mappings , they are some of the reasons why crash happen in some points of the map . Other reasons why the crashes happen can be because of some outdated plugins or outdated sa-mp version . Update your plugins etc . and try to remove the things you don't need / use in your server .

Good luck