is it bad if my gpu load is at 16%?!

Solution
No way to know, what test? What program? What gpu and what resolution is your monitor?

Either the test wasn't very stressful or your gpu is way overkill for your resolution since it's barely being used. A gpu test should push the gpu to 100%.

It could also be severely bottlenecked by a way underpowered CPU (although less likely).