This is such a common issue with the TF201 and I would categorize it as a design flaw. Changing software settings won't make a difference as this is not a software issue. Rather, it is a hardware issue. Bad cable connectivity is usually to blame, which is why pinching near the camera's location works to temporarily restore the connection (although sometimes, the camera is broken as well). There is an iFixit guide for taking apart the TF201 with an emphasis on camera replacement - although again, you probably don't necessarily need to replace the camera - it may be enough just to disconnect and reseat/reconnect the necessary cables and connectors. YMMV

I'm sorry to say that there is no fix for this. I've had the TF201 since release. It was bad at the start, and it's gotten significantly worse over time as both the hardware has degraded, and the sizes and dynamic scripting on websites has increased. This is just not a good tablet for browsing (anymore).