Hello and welcome.....
Dispersion adhesives are not really suitable for that format of tile.....
I take it they are porcelain bodies tiles at that size...if so then depending on how fast you work then a flexible rapidsetting adhesive or slower set is needed...I personally use BAL SPF but Mapei make some good adhesives as well..just depends on what you can get hold of.....
I would prime as well , as this will control any surface dust and provide a good key for the adhesive...
good luck and let us know how you get on......
