Video link: https://imgur.com/a/bxh7jR3

Has anyone else experienced this on their Accord? This happens very intermittently when changing from 3rd to 4th gear. Watch the video and wait till it reaches about 3000 RPM. When it starts to shudder, I have to take my foot off the gas and then accelerate again to change gears.

Specs:
LX
4 speed automatic
144,000 miles

I have tried changing the spark plugs and spark plug wires (both using NGK products). I also replaced the transmission fluid (Genuine Honda Fluid) but the problem still persist. Please help!

edit: changed link to imgur