Motion intolerance, either travel sickness or head motion intolerance/self motion is a common MAV symptom as is Visual Vertigo. Sometimes it’s hard to tell the two apart. Well I have found so anyway. Visual Vertigo is sometimes called ‘Supermarket Syndrome’ but includes such things as trouble watching flowing water in real time or on film, trouble with patterned floors, stripes, dots and repetitive patterns and so on. Not quite sure what’s currently causing you concern. Suspect from what I’ve read it might be that strange vision lag thing where you are still and vaguely looking in the direction of something stationery and it suddenly seems to move side to side, but you know really everything is still? There is a fancy name for it. Not that it matters.
Just like the vertigo being an illusion of movement all these eye anomalies are symptoms the brain is a bit hyper, over sensitive to sensory stimuli. I know it feels horrid and you keep waiting for the next one. I’ve suffered too. Over many years I’ve read everything I could and never see mention of a specific drug to take. General concensus is if you have a MAV diagnosis and a preventative drug controls the MAV it will control all these symptoms too and they should go away.
If it is that strange vision lag bothering you try not let your gaze rest idly and try to keep moving your head and/or eyes more often if only very slightly. Not a cure but bit of a coping mechanism maybe.
Are you on preventative meds? If not, might be worth looking into it.