Label Size in VR

What determines the size of the labels in VR? For example, If I hover over the Heading Bug, the heading bug label appears, but it’s so large it covers the instrument so I can’t see what I’m doing. If I right click to zoom in, the heading bug label is much smaller, and I can see the heading instrument much better. Is there a way to set the size of these labels both in normal and zoomed mode?