Hi Cl1ff,
That's a big drop on the fps! Have you tried to replicate the issue while on safe mode? You may visit the link below, it may help improve the performance of your laptop.
https://us.en.kb.sony.com/app/answers/detail/a_id/36017/p/48903,49902,74256,85634/c/65,66/kw/how%20to%20improve%20the%20performance. In addition, make sure that the game meets the requirements of the laptop to give you a better gaming experience.
Regards,
Jen
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