You need to set the settings level to ‘Expert’ and specify a whitelist under Display. IIRC without a whitelist double refreshrates are always used for framerates less than 30Hz.
Have a look here for everything on whitelists
You need to set the settings level to ‘Expert’ and specify a whitelist under Display. IIRC without a whitelist double refreshrates are always used for framerates less than 30Hz.
Have a look here for everything on whitelists