can i use bandicam, with low fps, and without timer ?

use obs for recording. free and good. and for the timer check the game rules and/or ask the mods of the game

Do you mean with no time limit for recording on Bandicam? The free version has a 10-minute limit per recording, unless you plan to purchase the full version so you can record for more than 24hrs. agree with @SioN OBS is a good option and easier to use. Most new on creating gaming content prefer to use OBS than any other recording medium.