Is my SSD disk aligned to 4k sectors and if not how do I fix it? [duplicate]

Run AS SSD Benchmark and check if this value is green:

If it is green your SSD is correctly aligned.

To be honest: don't try setting 4K boundaries, as you will only mess things up. Your problem is Inateck docking station: it has just mediocre controller on-board. If I were producer of such docks, I would not think of better controller, as people tend to use docking stations for HDDs, not SSDs (and 170MB/s is way faster than any consumer HDD will achieve).

If you're interested, even motherboards of full size desktops have same problems. It is widely known, that many motherboard producers use Marvell chips with SATA controllers (for additional on-board SATA ports) that have problems with reaching more than circa 350MB/s, even though they are SATA3.

Btw. why are you using SSD as external disk? SSD biggest advantage is random access (random read/write) that gives you large comfort while working on applications or OS that is installed on the SSD.