Yeah all of that.
Buffing the Predator health in the last update was not enough, the fireteam can still melt the Predator hp away fast. If the skill level of the fireteam and the Predator are around the same the Predator is gonna lose. Sure its easy for an experienced Predator to kill the whole fireteam in 2 minutes if they are new players but if they at least know how to play a fps the Predator can get to second wind fast.
Hell I had many occassions where I'm busy with 1 guy doing the mission and the other 2 premades end up killing the Predator on their own before I even saw the creature. Sometimes they get lucky and trap the Predator behind a door and knife it to death or they just snipe it so hard the Predator has no idea of whats happening to its hp, they know the tricks.
Heck I hunted and sniped Predators into second wind on my own, OWLF Operative + Ice cold + Mud > Predator cloak. Sure they were probably new players but still if you got a 1x4 assymetrical multiplayer and a 1x1 is possible there is something wrong there. The Predator can barely stealth on PC premades, its too easy to listen and see where the Predator is at or coming from, while you can snipe a Predator using stealth, so yeah even at stealth the fireteam can be better.
On the bugs, you got arrows and sniper shots going through the target or hitting objects instead what it should still happens, there are some rare occasions where lag can make you as Predator stand still for the fireteam when in your screen you are moving, your hp melts away, combistick teleporting after a throw, once in a while I still get the not being able to run as Predator bug.
The devs don't play as Predator, on the forums people said 5 devs did a livestream match and the guy had no idea at all how to he should play as Predator, the devs playing as fireteam pretty much tried their best to not kill the Predator right away. They cater to new casual players, so the fireteam potatos, meaning the only way to help those guys that wander alone having no idea where to go in the match is to give the fireteam enough damage to push a Predator back without having to work together.
And don't even get me started on the Field Medic OP spec, that crap is beyond broken.