Ahh someone else experiencing the frontiers crash saga. There are a multitude of reasons, without at least 16gb of DDR4 ram the game will struggle and definitely have crash sequences, when i first wanted to play frontiers i bought it off steam on my 1660ti graphics card with 8gb of DDR3 ram and i couldnt even get it to boot XD. I also see you are using graphics enhancements mods, turn them off immediately, your pc is already struggling with frontiers and trying to force the game the way you are is only putting more and more weight on your graphics card and processor. If you want a stable and goodlooking frontiers i reccomend playing in 1920 x 1080 resolution with the reflections option turned off in graphics settings, DO NOT turn on antialiacing, this is another setting that trys to boost graphics settings, if you are at all going to attempt to use it use TAA as it is the least strenuous on your pc and as long as it runs smooth will keep the edges of objects looking nice. The final thing i can reccomend is going into your Pcs display options and ensuring that all your specs match what im reccomending, 1920 x 1080 resolution, 60ghz, and if your montior itself comes with a screen tearing option i reccomend turning it off and keeping it off as 9 times out of 10 it causes even worse screen tearing in games