...change to defualt clothing or something random? This happens to me in almost every game.

What do you mean? o.O

i mean like how my clothes will be changed mid-game into a defualt charcter model...or changed into some thing that differs from my changes.

It's just a glitch, it happens when you skip a cutscene and instantly start the game, meaning you don't wait. I've had it happen where I skipped the cutscene, got teamswitched, and had Security clothes on a Resistance guy.

Some form of accidental Force Character Models. Probably is strongly related to the cut scene characters as stated above. Should fix as you die.

This happens to me sometimes also. I only notice it when capturing a command post tho (I have the 3rd person thingy).

It fixes itself upon dying

Yes i have that always if i start a game on a map.After i die then i'm my character.
I play on Pc.