+5 tilt is probably too high. That's a tilt angle for low altitude, that should decrease as you climb so that you're at approx. -1 in cruise(related to radar range selected)
You've entered the area of book knowledge vs. technique vs. experience.
For very low altitude work I actually decrease the sensitivity. High altitude I increase the sensitivity and use 'auto'(calibrated) for mid level weather.
Play with the radar tilt and gain settings to get the radar to display what your eye thinks it should see. Note those settings. After multiple experiences you'll have radar settings that you think work best.
At my carrier probably 80-90% of the guys increase the gain sensitivity above 'auto'(calibrated) in cruise and the most common tilt angle is probably -1 for cruise in the FL300-410 altitudes.