Where is this source from?
My memories. The first example was in the "jedi knight" game, the expansion Mysteries of the Sith
You seem to think that projecting yourself over half the galaxy for 10 minutes straight isn't difficult. The movie treats it as difficult. Nowhere else in canon have we see this. So, the only logical conclusion is that it's difficult.
The only thing that supports the notion that it's not difficult is legends, which isn't canon.
it’s obvious by his loses to kylo n rey he wasn’t as powerful as Vader
Maybe not in his old age, but I was referring to Return of the Jedi. My point was that even if he's decreased in power, he was once VERY powerful, so it's not like he's a weakling.
Also, he didn't lose to Rey or to Kylo. He was distracted when he got cheapshotted by Kylo (it'd be like saying Snoke is worse than Kylo) and he let Rey win.
Where’s it say Obi Wan gave himself to the force
His body disappeared and he became a force ghost. We learn in episode 3 that Qui-Gon discovered how to do this by giving himself to the living force. Obi Wan did this before Vader could kill him, and Luke did it after having finished his character arc.
I don’t recall Snoke or Palpatine dying from their feats
Snoke is indeed more powerful, and Palpatine never demonstrated as powerful of a feat.
Dooku has used force choke during battle has he not, as well as Ventress, so why wouldn’t Vader.
Rey and Kylo also used force abilities when fighting, so why didn't they against the preatorians? They were distracted, that's why.
So you’re saying Vader can’t just force choke eight human guards even though he can force lift two imperial guards
You're either not understanding me, or misrepresenting me. And I'm pretty sure it's the latter. First of all, I said don't compare them to Vader, they're as powerful as PT era jedi, not the one who killed all of them. Secondly, the preatorians are better fighters, so they'd distract Vader better.
What’s that scene have to do with anything?
The point was to show that force users can't (more like don't) always use their force abilities when it makes sense to do so.
You make it sound like he effortlessly evaded her every attack.
He did evade her every attack.
He couldn’t have just force pushed her away or something lol...there’s legends material...
Stop mentioning legends material. It's irrelevant. And pushing her away with a blade of plasma in her hand (and near all these sharp rocks and unstable heights) is dangerous. The best he could have done is pinned her to the ground, but he's a pacifist, so why bother?