When Brendon Fraiser is by far the better lead than Tom Cruise, it spells a huge problem from the get go. Cruise played himself, as he always does, but with ever increasing ego and decreasing capability to pull off "superhero" role.
Then we have (surprisingly) bad CGI, special effects from nearly two decades ago looked better (and with a 45 mln. smaller budget). Cruise's CGI looked cheap, worse than seen on numerous TV shows nowadays, and if you noticed - almost always in the dark, to further decrease expenses. Then what Universal and Cruise have done with 125 mln.? Certainly not salaries or CGI or script. Whats left, money laundering?
No humour whatsoever (unless we consider Cruise getting ass kicked as funny, which sometimes was), and if extremely annoying Chris Vail character was suppose to be a comic relief... A massive fail on both writing and casting.
Rachel Weisz had a character with some substance, she pulled off her role. Mrs. Wallis was just eye candy, nothing more, nothing less. At least Sofia Boutella was casted well.
Bottom line, if you haven't seen this movie yet - don't waste your time and money. Rewatch previous Mummies, and you will enjoy much more.