if the plague of talking in shul (either side of the mechitza) cant be eradicated i would leave and find a suitable shul, where there is yira shamayim, kavod beit knesset, kavod for the tzibur.
a secular relative was once visiting me and came to shul with me. he was floored at the lack of kavod for the shul that the mispallelim showed. despite the rabbis many repeated pleas, he said he never saw anything like this in all the conservative and reform shuls he had ever went to over all the years… he was shocked that orthodox jews would behave this way. such a disregard for the shul,the congregants, the rabbis, the torah and for Hashem! and it wasnt just during the tefila, it was during the kriat hatorah, and continued thru a drasha given by a rabbi that was invited to speak as a guest.
i haven’t gone back there for years and dont plan to. it was a true hillul hashem that happened in front of many jews, and of course a personal embarrassment for me as well. needless to say definitely not an experience that brought anyone closer… (i wish i had brought him somewhere else) of course there is a lot more good going on, torah, mitzvot, chessed, bh! but we need to fix this…
to all the talkers a refuah shalema bkarov, and it really is a sickness, but thats still no excuse. ask yourself, if you go to shul to talk- where do you go to daven? if not for the sake of all the others around you, so they can daven properly, do yourself a favor for YOUR kavod of the shul/ tzibur and review hilchos kavod beit haknesset