If you have a ton of files and want to sort them out, you could just download them all with qflipper, use whatever duplicate file checker you like , remove the duplicates , and reupload them back into the subghz folder?
Also making sure you have duplicates or same protocol messages it might be a good idea to convert them and analyze them with rtl433 so it is a bit more easy to catalog them and sort them.
Having a weather-station with timestamps you can get piles of captures that are somewhat the same but the checksum differs, so on these specific ones it could be more easy to use and pipe other cmd tools to sort them and filter out the trash. Also while checksum and timestamps maybe changing a lot, for example size of data seems to be roughly the same and repetitions in the air, so filtering them out on another platform is a lot faster and more easy.