Most movies I've seen have very little crosstalk, and a few other movies have had more crosstalk than others. In general, I try to view 3D as bright as possible, but as quiet as possible; so I always try to set/do the following with my projector for 3D: (1) This projector definitely exhibits more crosstalk if it's not warmed up. Depending the on lamp mode, it can take 15 minutes to 30 minutes for the projector to warm up. So I try to view all of the opening trailers, etc., or set my glasses to "Normal" or "Dark" during the the first part of the movie to lessen any crosstalk if there is any. (2) I usually set the lamp mode to Eco b/c I sit under my projector and the fan is audible in "Normal". A few times though, I've set to "Normal" if the picture was too dark, e.g. "Fright Night" :P (3) I usually try to set my glasses to "Light" to counteract the loss of brightness, but I will set the glasses to "Normal" if I see more crosstalk than normal, or if the picture is bright enough. "Dark" settings will probably exhibit the least amount of crosstalk. (4) Also b/c of the loss in brightness, I usually try to view with the brightest picture mode settings, e.g. Dynamic/Normal/Cinema 2. But the brightest settings with higher contrast can enhance/display more ghosting if there's any, e.g. Rec709, which is dimmer, will probably show less ghosting. (5) I sit straight ahead at eye level, which is ideal for 3D in general. But sitting at eye level might be difficult for those without raisers. If I do sit in the lower chairs and closer to the screen, 3D looks really awkward. Also, any slightly visible crosstalk is less visible the farther away you sit b/c you simply can't see it.
I think Panasonic recommends sitting back 3x the size of the screen, which I think is pretty far. I think I sit back 2x the size of my 119" screen. (6) I haven't really tested this out, but frame creation mode reduces crosstalk; the higher mode the better. But I usually view movies with frame creation off .
Also, another thing, I think, the movie itself is a factor. Some movies have more crosstalk than others. Dark objects, esp. small dark objects, against light backgrounds are prone to crosstalk, which is when I usually see it. Like in Top Gun, the small dark planes set against the sky always had crosstalk for me on the AE8000. Despicable Me, which was converted, had crosstalk with dark objects against light backgrounds, e.g. street lamps in the beginning scene. Usually stereographers/filmmakers keep high contrasting colors in mind b/c of crosstalk, but in some cases, it's unavoidable.