So i finally found the most suitable solution for penis insertion on male/futa atoms after. i have been checking for the better solution on here and so far no one mentioned this one so i assume it will help alot espacially for new people who are struggling for futa/male penis penetration. The plugin is called penis collision. by pairing it with divining rod and autogen thruster it works flawlessly (atleast for me), all we need to do is to either set the slider to 0 on penis collision plugin then insert the penis with the help of above mentioned plugins into the desired futa/male atom and then set slider to default '1' and you got the penis inside without any noticeable physics glitching out. The 2nd method if you still struggling with it even after this is to set the penis collision slider to 0.50 (personnel preference you should test it out to see what feels good for you ) and with this the colliders of penis shrinks making it far more easier to penetrate futa/male atoms. you can check the collidors visually by ticking the box vitualize in penis collision plugin. oh and also don't forget to make the penis stiff or erect during penetration with help of autocock plugin. with this you get the best result i can live with at least after searching for sometime. The idea came when i saw weebU plugin he used in his scenes and was surprised no one ever mentioned the penis collision plugin when asked for futa penetration help. anyways hope this helps out the new comers and others who still have no clue about this plugin. have a nice day.