If after saving a theme option you see no progress in pop up recompiling window or see any error related to styles recompiling, please, contact your hoster and ask him to make sure you have the following configuration in your server:
mbstring.func_overload = 0
The max_input_vars value on your server is also influence the recompiling. So, please, ask your hoster to:
1) increase your max_input_vars at least to 5000;
2) or just add this line in .htaccess file of your theme:
php_value max_input_vars 1000
Regards, DFD Support Team.