Um, yeah? Transitioning massively reduced my dissociation.

That's pretty much the definition of gender dysphoria.

I'm still early in my transition so maybe keep that perspective in mind because my thoughts and feelings will definitely change. For me I had over 30 years to develop coping strategies for having a male body. I wouldn't describe it as dissociation exactly, I couldn't have maintained that for so long. It was more I just became resigned to my body and hating it before I realized I really do want to be seen as the girl I am inside. It was more like things didn't hurt as much because I could rationalize that negativity wasn't really directed towards me, just some dudes meat mech I'm piloting. Starting the transition process has resulted in euphoria for sure, and I definitely feel more comfortable being feminine, but it has also really ramped up the dysphoria. Now that I know I can change myself and accepted what I really want it hurts that much more to see all the things I hate about myself in the mirror. Masculinity was like a full body suit of armor for me. The soft sweet gooy girl inside was protected by layers of facade and masking, and now that I'm trying to take the armor off and be the real me I sometimes feel absolutely horrible. I get terrified of people seeing the real me, judging me, telling me I'm wrong, ugly, stupid, selfish, not really a girl, all the negative things, and that feels like it would actually be directed at the real me, raw and unprotected, rather than this random dude I've been cosplaying as. Even when nothing bad happens and I know I'm in a safe space I get so terrified I need a lot of time to recover. It's getting better for sure, but it's still a transition (hehe).

It was more depression for me than dissociation, although I've heard many trans people do disassociate, for me I felt too present in the world.