Is it normal to wait 50 min for baking a "simple" fluid animation? As said in the title, is it normal for this to take so long? In this video it takes them seconds to bake (video: https://youtu.be/xIxUZpRk4Ac?t=147), they stated that they had a GTX970 but I don't think GPUs affect bake time.
Also while I'm writing this, it says elapsed time is 20 min and time remaining 30 min.
Here are my specs:

CPU

Intel Core i7 6700K @ 4.00GHz
Skylake 14nm Technology


RAM

16,0GB Single-Channel Unknown @ 1069MHz (15-15-15-36)


Motherboard
ASUSTeK COMPUTER INC. STRIX Z270F GAMING (LGA1151)
Graphics

ROG PG278QR (2560x1440@144Hz)
4095MB NVIDIA GeForce GTX 1080 (Gigabyte)


Storage
931GB Samsung SSD 850 EVO 500GB (SATA (SSD)
465GB Samsung SSD 840 EVO 500GB (SATA (SSD))
This seems quite normal - fluid simulations are very CPU intensive to bake and the workload increases exponentially based on the simulation Resolution (eg, doubling the Resolution results in 8 times the number of 'cells' in the domain (2x2x2)).

If you look closely at the video, shortly after the guy hits 'Bake', the mouse jumps to slightly above the bake button. Most likely he paused the video midway, allowed it to complete the bake, then carried on as if it had only taken seconds - whereas, really, it likely took a similar amount of time as you are experiencing.