so I have issues with party members blocking other party members in tight quarters. The rules state that a character can pass through a square that is occupied by an ally, but this isn't the case in this video game. This is frustrating in the extreme. wasting a character's turn because they can't reach an opponent.

M o v i n g A r o u n d O t h e r
C r e a t u r e s

You can move through a non hostile creature’s space.
In contrast, you can move through a hostile creature's
space only if the creature is at least two sizes larger or
smaller than you. Remember that another creature’s
space is difficult terrain for you.
Whether a creature is a friend or an enemy, you can’t
willingly end your move in its space.
If you leave a hostile creature’s reach during your
move, you provoke an opportunity attack, as explained
later in the chapter.

Its probably too late to address this but it, and a few other 'design choices', detract from the flow of the game and causes no end of frustration for me.

I am also not a fan of the way the camera jumps from attacker to attacker when I'm trying to coordinate my party in combat. A toggle to stop the constant camera shifting would solve this, especially in a turn based scenario.

Just my two cents. My biggest gripes come from the 5E rules rather than game design.