That sounds like some sort of firmware/driver/power options/trim issue. Did you build or customize this laptop because I find it hard to believe a name brand laptop configured from the factory would do this. If it did then they all would and it would be an easy known issue to find the solution. Its been my experience even the cheapest ssd will outperform the best platter drive and I have not experienced any 1-2 second delay running my OS off of a sdd.