Batrix2070
RON/PLC was a wonderful country.
Rather, the problem lay in the fact that these people were loyal to the Commonwealth, but thanks to Maria Gouzales wife of Ladislaus IV and John Casimir, bribery of the magnates by neighboring courts entered the norm.(well, Polish Sejm was the exception - but that is what happens when you let foreigners into your country's parliament).
She, in order to create a pro-French party simply bribed half of the magnates, so the other half wanting to save the Republic in their view allowed themselves to be bribed by Austria. Which began to create quite a mess eventually, as the magnates abandoned their previous policy of xenophobia towards foreigners and over time began to become more cosmopolitan than national.
While this wouldn't have been much of a problem if it weren't for the impoverishment of the middle nobility thanks to the Swedish Deluge, thanks to the Swedes the middle part stopping the oligarchy from taking full power collapsed.
Michal Wisniowiecki was the last uprising of the middle nobility against the magnates, but these managed to successfully stifle it, because unfortunately he did not have much of an ally, and his short reign did not allow him to wriggle out of it despite Michal's hard work.
Unfortunately, Jan III Sobieski, one of the magnates who threw a spanner in the king's lap, learned very quickly that his actions and those of the others effectively undermined the authority of the king and later the Sejm, paralyzing Poland for half a century.
At the same time paralyzing only the ability to pass new laws! Because if it was about enforcing the existing ones, the matter was not so obvious.
The best example of this was August III, who was able to rule the country despite the fact that the Sejm had fallen into complete anarchy! Why? Because the Senate continued to function normally. And it was he who fulfilled its role during the paralysis of the Sejm, and during the Poniatowski era this role was fulfilled by the Permanent Council.