2001 cvpi bogs down when in cruzing speed

I got my cv not to long ago i was have some real problems with the shudder in the trans i did some research and i did a transmission service. Now 2 months later i am trying to cruze when going around 40 mph to go up a short hill the car seems to bog down to a point untill i feel i have to press harder on the gas then it drops down and its fine

I just replaced all of the spark plugs and cleaned the mass air flow sensor with a new air and fuel filter
the car runs better but still will bog down at cruzing speed under a light load

Sounds like a bad coil pack.

no there is no check engine light on for a miss fire and i checked all of the cop when i did the spark plug change

i did have an issue with a few miss fires but i fixed them by replacing the cop and the spark plugs
but my check engine light is now on for the cats
would the cats cause all of these symptoms if they are bad