You could use an engagement metric to check whetver the test is impacting user to spend less time on page.
If you want to check clicks, you can use conversion metric > Clicked an element.
But calculating only click conversion won't be 100% useful if large amount of clicks are not getting converted into final goal. for tracking final goal after clicked an element you can use advance settings as shown in following screenshot.
For example, If i want to measure clicks on Buy now button, I would get high conversion. But I'm not able to understand how many people actually baught the product.
In Such case you can use advance settings as follow.
Set primary goal as clicked an element (i.e. Buy now CTA)
Add Secondary goal As Conversion > Viewed a page > url contains > thankyou (which is my final page after produt purchased)
click on three vertical dots where you can see Advance settings.
Select primary goal from selectbox for following question. (which means views on thankyou page (secondary goal) will increment only when primary goal is successful)
Which success metrics must be reached before incrementing this metric?
This will tell you how many people visited thankyou page after clicking on Buy now CTA.