Car "Jerks" while accelerating

I've been noticing this pretty much ever since I bought the car. When I accelerate moderately from a stop or slow speed (5 to 10 km/h), I can feel the car jerk fairly harshly - enough to throw you forward in your seat. Right before RPMS start to get around 2500 - 3000. This doesn't happen if I accelerate slowly, if I'm already moving at a decent speed and I floor it, or when I'm decelerating. Only when I accelerate from a stop or very slow speed. I have a 2014 Civic Coupe with the 1.8 and the CVT

I've changed the CVT fluid with an OEM equivalent replacement from partsource, and it seems to have mostly gone away for the first ~50km, but not long after that, it's back as if I haven't done anything. I've put around 1,500km on the car since I've changed the fluid and it feels as if I haven't done anything now

My car has 143,000km, and since I bought it used, I have no idea when the fluid was last changed. I asked the previous owner and they didn't remember getting it done.

What can I do to solve or improve the issue? It's quite frustrating and uncomfortable for everyone in the vehicle.

Thanks everyone :)