I recently went through a period of poor performance due to my TV broadcasting its presence on my wi-fi channel. (Printers can do this too.) Really killed performance. But my Librem laptop managed to stream videos and search results better than my other computers, running debian.
And I haven’t heard any complaints in the forum about bad performance due to software.
If you can’t get the range on 5 GHz, you should drop down to 2.4 GHz. If 2.4 is crowded, move to 5 where neighbor interference should be less.
If you don’t have 5 GHz, might be time to upgrade your router.