Windows LAG IN 1.5.6

[Fallen]

Sorry for any errors I may have, I'm using a translator.
My game starts normally, however, after a few minutes of play (10 to 20 min), my fps drops absurdly, making it practically impossible to play, this only occurs in version 1.5.6, whereas in any other versions the game works normally without any drop in fps.
RAM: 2.0GB
Processor: AMD C-50 processor
Windows 10

 

[henrique3dx]

Likewise, I've seen a lot of tutorials and nothing, I spend 10 minutes playing the game and out of nowhere it starts to get a lot of lag, I want to play with mods, it's not the mods that cause this lag, the only way I can play normally and with the version 32bits from steam but mods don't work

Sorry for my English, I'm using Google Translate