So my computer is behaving strange after upgrading my SSD...

[Me+Me]

Interesting.  Personally I never use sleep mode I simply hibernate it.

Your sleep issue shouldn't have anything to do with hibernation they're quite different processes.  You can turn off hibernation if you don't use it and that'll delete the hiberfile.  How much virtual memory you got it set up for ?

I have 32GB of RAM and the page file is set to dynamic so it adjusts automatically if required by windows. With that much memory, I doubt the page file is very big at all. Should check its size, but so far have had no issues today.

I never leave a dynamic page file now-a-days.  It's less wear and tear on particularly an SSD to set it to a fixed size.