can not position cursor precisely

something going wrong with cursor positioning (probably some setting that I messed with)…

When click on track the cursor positions only at each second position… the same when moving with left/right arrow.
Never saw this before. Usually can precisely position (where click) or smoothly move the cursor within a second interval.
Now it “jumps” by second only.

What to do?

Turn off “Snap To” (see:

average user … never used the option