U have "r_mode" twice in your config. one with "-1" (Custom) and one with "4".
Removing it wont help your FPS tho.
The GT 1030 isnt meant to be a playing card, but rather a Multimediacard.
Thats the main problem there...consider changing this Card to something more playable.
Oh and make sure the Graphics Drivers are updated.
If that also doesnt help...
Suggestions:
Nvidia GTX 1050Ti
Radeon RX 570
Those are powerful enough to run almost all Games very well whilst still being relative inexpensive (120-140€).
If you dont have Money or dont want to buy anything, ur best go would be to lower your Resolution...800x600 should improve the FPS quite a bit.