I cant help with the chunked/unchunked terrain stuff, but the current A7's "world space" has a limit of +1,000,000 to -1,000,000 quants in all x,y, and z directions. (The actual number is 1048576. The limit of a var... )
"There is no fate but what WE make." - CEO Cyberdyne Systems Corp. A8.30.5 Commercial
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