All the sliders and options have a numerical value attached to them - can these numbers be typed in rather than using the mouse? Perhaps click on the value and change it (return confirms and exits the field)?
And the R/L arrows increase/decrease the values by a small amount? Perhaps hold mouse button down and use arrows to fine-tune? Use up/down to jump in (eg) 10’s?
(I know that R/L arrows currently move by 0.1% in a percentage bar, but if the value is from -10 to 10 the step value fluctuates and up/left (& down/right) perform the same function.)