What is your Shotcut version (see Help > About Shotcut)? Is it 32-bit?
Can you repeat the problem? If so, what are the steps?
(Please be specific and use the names as seen in Shotcut, preferably English. Include a screenshot or screen recording if you can. Also, you can attach logs from either View > Application Log or right-click a job and choose View Log.)
my system requirements are too good to export a long video nearly 1 hour
Is this an observation, or a question? If it is a question you are asking for help, you need to provide a lot more information:
What is your operating system?
What is your Shotcut version (see Help > About Shotcut)? Is it 32-bit?
What are the specifications of your system?
What filters have you applied to your video clip(s)?
Have you exported a 46-minute video with Shotcut before, and if so did it too take over an hour ? (depending on what filters you have applied it could take considerably longer than an hour.