why my sex animation act not the normal way ?

[Mr. Smith]

i mean when i let my player (which is a female) to have sex with others with any position or any state and when he pull out his dick and try to stick his cock inside her pussy or ass or even if she suck his dick the cock will not go there. i mean his is doing the act but his cock is sometime sticked in the butt i mean not through in her pussy or ass and when she blowjob him his cock will be in her nose or eyes if you know what i mean... i saw that was weird so when i checked in the internet at a porn site which is Pornhub.com i saw someone was uploading a videos about the sex of skyrim and i saw when a male put his cock inside the pussy or the ass it will go there even if she suck his dick she will put it through her mouth just like the real thing and that was awesome 
so i need your help about that .... i want the real sex not the bugged sex
 

[CPU]

Set the option in SexLab to uniform the actors height.