Need Help with Networking!

I’m having this weird issue with mouse controls, when a remote client logs into my game, his camera starts jiggling either up and down or left and right. This issue happens only if client is too far away from host, for example, my friend is from US, and Host is from Moldova (me), then it starts jiggling on my friends end, but if another friend joins (he’s from Romania, neighbor country), he doesn’t have the same issue as my friend from US.

Here’s the demo from our playtest, player on screen is from US: playtest - YouTube

Another demo from friend from Romania: - YouTube

Now i’m confused, what can be the case? please help!

i’ve also uploaded mouse functions bp in case it may help.

Definitely camera, from my perspective i clearly saw how remotes clients arms were jiggling up and down. Speaking of hardware issue, 3 of my friends from US living in different states with different ISP’s had this problem, so this is not hardware issue for sure. this also happened to one guy from UK, same thing.

Is it really the camera or is it the Pawn falling through the floor?

Maybe the US client’s problem is related to their router or ISP? Have them try connecting from a different physical location to eliminate a hardware problem.