Okay, let's try this with Science! Ten match set, running in my Heavy Metal, let's see how I do and what I drop with and against.
Match 1: Only mech with JJs in the match. It was a loss, but I successfully poptarted in my Heavy Metal, 3 kills, 1 assist, 515 damage.
Match 2: Again, only mech with JJs in the match. There was a Jenner, but the guy had pulled his JJs off. Didn't do so well here, 1 kill, 1 assist, 494 damage. I got pinned in a canyon surrounded by enemies, but I got one and heavily damaged a Raven (which I got an assist on) before getting out. I further damaged a few other mechs, including half stripping a hunchback, before dying.
Match 3: This time there was one other mech with JJs in the match, a newbie pilot running a Jenner, didn't even know what JJs were when I asked, had to give their full name. 1 kill, 4 assists, 364 damage, match win. I poptarted quite successfully. The only time the screen shake really hindered me was a couple times when I only had to jump up a meter or two to clear an obstruction to fire on a target, and when I abandoned the poptart role when we pushed on the weakened enemy forces. When I closed to brawling range, my maneuverability was severely hampered by screen shake.
Match 4: One friendly, one enemy Jenner with JJs, neither seemed to use them much. I again poptarted fairly well, 2 kills, 332 damage. Would have done better but our team got strung out trying to defend our base, and my position was overrun. Once again, screen shake only hampered me when I had to jump a meter or two to get a shot, and after my position was being overrun and I was needing my JJs for maneuverability in the brawl.
Match 5: Five other mechs on my team had JJs, though the only mech besides me in the entire game that I saw using them was our RVN-4X, who was popping up and down a bit while sitting on the enemy base, because he was bored. Got two kills, two or three assists, didn't catch my damage. The brawl broke out very quickly near my sniper perch, and I was dragged into it, so I didn't get much chance to snipe properly, but once again the screen shake severely hampered my ability to engage in the brawl.
Match 6: I was the sole mech in the match with JJs. This was not the best test example, I made an unwise call and led a brawler push in my poptart, but it was a situation where a push was a good idea, most of the team was waffling, and one other guy was pushing, so I abandoned my experiment to try and help my teammate. I did experience the first real hindering of poptarting from screen shake, though. In the outset of the match, I engaged against two sniper stalkers, and after that had shots on much of their team, but the positioning was such that I had to make small jumps to line up the shot, and the screen shake just would not let me do that, or not reliably, anyway. With a little practice and terrain awareness I could avoid and minimize those situations, so it would still not hinder me much.
Match 7: Once again, I was the only mech to use JJs. There was a Jenner on my team, and two on the enemy team, but I never saw any of them using JJs. Screen shake hindered me only slightly, being aware of the problem with making small jumps to shoot at a target, I was largely able to position myself such that it wasn't a problem. It only became a problem when we pushed the fight and I was closing on the brawl, and then once we were in the brawl screen shake inhibited my ability to maneuver around my comrades and the terrain. No kills, three or four assists, 300-something damage. Damage would have been higher, but we caught them all strung out and the battle ended quickly.
Match 8: One other mech had JJs, but I only saw him use them at the end, to help get over a hill the enemy had ducked behind, and that was in a "mad race to shoot the crippled mech and get the kill" situation. I was not significantly hampered in my poptarting by the screen shake - I'm still getting used to it, and it's just a matter of timing and skill adjustment. Once again, the only significant hindrance screen shake gave me was towards the end, when we closed on their LRM Stalker and pushed the brawl.
Match 9: One other mech used JJs, a Spider on the enemy team. He was hard to hit, but I still took his leg off while jumping at over 300 meters. Screen shake was just a minor annoyance in this match. 4 kills, 3 assists, 842 damage.
Match 10: I was once again the only mech using JJs. I didn't do so well this round, and didn't get a good test in. I walked around a corner trying to get a shot on a target and support a couple friendly mechs, and found their entire team. I managed to get back around the corner, but the mechs that chased me finished me off.
Match 11: This one goes to 11. } ; = 8 P I had a couple matches that were bad tests, so I am doing an extra one. There was one other mech on the enemy team that used JJs, but in a limited capacity (used them to get over some oil tanks in the mad-dash-to-kill-the-crippled-mech). There was a Jenner on the other team, but it did not use any JJs. I was not significantly hindered in my poptarting by screen shake, and was only hindered when I dropped down into the water not realizing that 5 of my teammates had already died (I'm still trying to figure out how THAT happened... three or four of my guys were up in Kappa behind me, facing off against a Jenner and a Hunchback, on the other side of the map from the main enemy force, and the other two mechs remotely near them were shooting at me). 2 kills, 0 assists, 449 damage.
So, clearly, the classic poptart, the stereotypical Heavy Metal pay-to-win poptart build, is not significantly hampered by screen shake. It is somewhat hindered under certain conditions, but with some practice and situational awareness, a half-decent pilot can largely avoid or minimize those situations.
The only time that screen shake significantly hampered my JJ operations was at short range, when I was trying to use them to add maneuverability in a brawl. Under those circumstances, they were EXTREMELY difficult to use, very disorienting, and made it damn near impossible to hit anything, even after I released the spacebar, because there is a short delay before the screen settles enough to reliably aim, and in the fast-paced environment of a brawl, that delay is often devastating. For a poptart, this is not a serious issue - poptarts suck in a brawl, anyway, and should largely avoid them unless it's a final push to finish off a heavily damaged enemy force - but for any other build that would use JJs, it is a crippling disadvantage.
I was not bothered by motion sickness or headaches while using JJs, but I was still physically affected by it. The rapid screen shake caused my eyes to rapidly try to refocus, resulting in me defocusing on the entire screen, making it difficult to line up a quick shot after releasing my JJs because my eyes had to refocus on the screen, and if I used JJs for an extended period of time, I could feel my contacts shifting on the lenses of my eyes, because they were adjusting their focus so much.
I did not see many mechs equipped with JJs, and the few mechs I did see equipped with them rarely used them. In eleven matches, there were only two mechs that used their JJs in combat more than once or twice, and only one of them used them constantly through the match. There were no JJ brawlers, save one Spider, and though that Spider used JJs through the match, his use of JJs was modest compared to Spider pilots I saw before the implementation of screen shake.
Edited by Ilithi Dragon, 22 June 2013 - 05:57 PM.