How long should it take to synchronize with blockchain? I expected to find the answer somewhere here, but I could not find it.

I am using windows 10 and the bitcoin core wallet, with 2GB database cache. I have set the wallet to start on system boot, and I boot my system every 1-2 days.

How long should synchronizing with the blockchain take in this case? Let's say I'm 14 hours behind.

For me, Bitcoin core will take about half an hour to sync, and I feel this is way too slow. I have a relatively new gaming laptop with an i7 processor, 8GB RAM. I have Bitcoin core installed on my SSD, and the blockchain is stored on my SSD. I have 40 megabit internet (and I do actually reach similar speeds).
A half hour to sync two days is almost 100x faster than real-time.  It's slower than I would expect, but without more information it's not really possible to tell if there is anything that could be improved about your system or configuration.