Like slugging through wet cement. Long character descriptions in place of letting the characters reveal themselves. More dialogue, please! Fewer mind-numbing lists of adjectives, please! Too much description of what happens and not enough real action. Stereotypical scientists, academics, and law enforcement officers. Predictable villains and heroes. I doubt if many readers care about any of these characters as they read. I know I didn't. Live or die, "whatever".
I forced myself through it but it was a tremendous bore.