AWR1843BOOST: Reducing the interframe periodicity and amount of chirp loops in config file without the chip to stall or fail

Hello

I'm trying to use the subframe configuration  in order to get different chirps from different Tx each frame. It seems ,as explained in the sdk user guide, that the minimum number of "chirps per subframe" (if only one chirp configuration is used) or loops is 4, configured in "subFrameCfg". However, the lower I can get is 12 loops which in my case this means 12 chirps every subframe. Is there a way to reduce it? perhaps not to 1 but 4?

I'm also aware of the rule that subframe/frame periodicity should be equal to the burst periodicity (at least for the demo)  and this should also be greater than the number of loops per duration of chirp, since I only have twelve chirps per loop this seems to not be an issue and it can be changed up 0,5 ms as stated in doxygen. However, the lower time I can get in periodicity of frame is 30 ms. Is this a demo restriction or can it be lowered via fine tuning of chirp parameter? if sow how should I follow?

Best Regards