So far I've only played in solo, except to try out open play a few times. From the little online I've played, I've had no problem whatsoever with griefers, but I had a lot of network issues. These are the reasons why I don't play open play :
- At times the initial loading takes like 5-10 minutes (!), against about 30 seconds in solo.
- I got problems at the stations. I asked to return to surface and nothing happened. When I insisted, the ship eventually got brought to the surface after like 3 minutes (while I was browsing the station's menus). Sames goes the other way, when I landed on the station I had a lot of difficulties getting the menus to appear, and entering hangar.
- Loading each area takes a lot longer, especially stations, so every time I exit supercruise I have to wait a long time.
- I went to the Federation Distress Signal in Eranin where I usually like to fight. I was close to an enemy player in a Viper and engaged him. After I landed just a few hits he just FAOff boosted away. I was forced to let go as I couldn't hope to catch him with my Cobra. While this behaviour is fair enough against AI, it just makes confrontations useless against another player. Unless you have the fastest ship yourself, you have no hope of beating another player in a fair fight if he runs at the first sign of trouble. I understand why people do this, hell I probably would myself, but it's just no fun for the attacker.
- Following this, I took on an NPC fed ship. During the entire combat, it kept teleporting due to lag, making it almost impossible to hit even with gimbals. Eventually, it suddenly teleported right in front of me, causing an unavoidable collision which instantly destroyed my Cobra.
Tl;dr : Travel takes ages due to loadings, battles are unplayable due to lag, to the point of destroying my ship caused by unavoidable lag-induced collisions, and when I eventually reach a station I get stuck because I can't enter the hangar, or leave it when I'm finally in it. That's my experience anyway.
I don't know about other people's experiences, but as things are now, online is just unplayable for me. I hope things get better in final release so I can play online, but if they don't I won't cry over it, solo is good enough for me.
EDIT : I have to admit I kind of feel bad about playing solo, because of the massive amount of work the devs put into this aspect of the game...