Took GMAT Online, felt it was way harder than the practice test (2)

Especially the Verbal section was on a completely other level. In the Prep test, the reading comprehension was straight forward, I had barely any problems to answer them, had 71st Percentile in the end and scored 16 out of 18 consecutive questions in the middle part correct. Now in the real test, almost every non-SC-question after ~Q10 gave me a hard time, resulting in bad time management, meaning I had to skip/guess many answers in the end. Is it because I might have answered more early questions right? If so, how bad will the punishment be for most likely not getting many of the last questions right? I really feel I missed out on a higher score, many of the problems seemed solvable with the average 1.5-2 mins...

Anyway, the overall GMAT Online experience was smooth, I just don't understand why there is no break between Q and V like in the test centers. Who needs a break between V and IR? IR doesn't even matter for most schools, the test was done for me before IR even started. Instead, the missing break between Q and V really hit my concentration in the end, after two hours of non-stop problems. I barely had any problems with the 700-level CR questions posted in the forum, but as many CR came to the end of this exam, my brain just saw a bunch of words clipped together, frustrating.