I ran across this DVD in Goodwill yesterday, I didn't have it and haven't seen it, and I knew almost nothing about it so I brought it home. Turns out it's a "reboot" of the franchise, not really connected to any of the other movies in the PotA franchise(s). The premise here is new to this franchise, although very old in the history of movie-making: anti-Alzheimer's drug is accidentally given to a chimp, giving him near-human intelligence, making him very dangerous as a research subject or pet. He escapes, blah blah blah. You can guess the rest.
Which is the problem with this film. The bad guys are VERY BAD. The good guys are VERY GOOD. The chimps are conflicted, and turn against the bad men who have mistreated them. Well, duh.
I enjoy a good popcorn movie as much as the next guy (see "Rogue One") but when the dialog is as stilted as this ("Be careful with this chimp, he's special") and the plot is as obvious as this ("Flowers for Algernon," anyone?) and the special effects are as fakey-looking as this, well it takes me out of the enjoyment zone.
Why make a movie if the audience can guess the whole plot after ten minutes?