I  have not the greatest internet (6-8mbps) and with this game it gets stuck past 90%+ or even at load complete. Refreshing does not fix the issue. The inspector shows an issue:

Uncaught SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data 

at 

readFile html/9512760/Web-Version/utility/util-io.js:38

III does not have the issue.  Sidenote, it'd be cool if any changes could still be made to III, specifically fixing the issue of lacking elemental resistance (like making spell power or mastery of elements add some relevant resistance).