H.264 frequent error

I'm using the release 15 final, not beta, not Studio version
win 7 64 - 32Gb RAM - Nvidia Quadro K2200

when i try to render something in QT H.264 it only works if i leave the setting from youtube or vimeo preset...if i try to change anything it satrts and crashes after some frames only

i mean it gives me an error code, Davinci remains open and fully operative

i had several tries to find whic setting can be the responsible of that but nothing worked, the only way to render with H.264 is to use a fresh preset as i mentioned above

thanks in advance

Win7 is not supported OS for Resolve 15.
Use search- subject discussed many times.