I agree with Bogdan, AI Limit mod is very good for users who are struggling with performance as it removes or dematerialises bots and rematerializes them else where so your game doesn't get bogged down and starts to run poorly. AI/bots have major impact on performance and what also doesn't help is Tarkov's piss-poor optimisation and stability. Like others have said there is no secret to gaining better Frames but you could try this FPS Boost with command line in boot.config and see if that helps you. I saw a pretty significant increase in performance and gameplay making these changes and I would recommend more people to try it.
Hopefully in 3.8.0 we will see a sharp rise in performance gains as well as all the goodies that came with wipe 14.0 at Christmas.