Engine hesitation

So I changed the following on my vehicle. A lot this due to the fact the car was not maintained very well prior to me and I bought it earlier this year.

Timing belt, water pump, pulleys, idle bearing, belt tension-er, spark plugs, valve cover gaskets, cam seals, crank seal, knock sensors, knock sensor wire harness, coolant hoses, intake gaskets, throttle body gasket, air filter, PCV valve, fuel injectors coolant, oil.

When I reconnected the vacuum hoses I made sure to follow the diagram on the hood I had handy. I have gone through and triple checked and can't seem to find anything wrong there.

The car starts normal when hot, when cold is have a slight hesitation that does not seem apparent then accelerating. Though when I change to reverse sometimes it delays to change gear and the truck vibrates/rocks. Other times (even when cold) it will go right into reverse.

On a test drive I find a delayed slightly hard shift into one, then a hard shift into third and a shake/jerks into fourth where the shift is delayed and the truck jerks/rocks. This continues whether engine is cold or warm.

What I feel to be honest is a vacuum or a gasket leak but I'm not sure. I changed some of the transmission fluid by simply draining and fill. Fluid was grayish pink, no shaving on the drain pan bolt.

Any ideas I will welcome with open arms. I do have a vacuum pressure gauge on the way. I also plan to use a multi-meter on the throttle position sensor to check that. But I am really scratching my head here.

Ran scans today, nothing comes up for DTC's.

Also, to note, when I press the accelerator gently when cold, there will be a delay/hesitation and sudden boost of the engine. It is less apparent when the engine is hot. Sometimes with the delay/hesitation there will be a slight loud pop like bubble gum.

Could it be I messed up the one of the two intake gaskets or do not have a proper sealed.

Here is a video I took in attempt to capture it:

https://youtu.be/p3Iq7mRT6P8