i used to get 190 FPS with my old modpack but now i get only 20fps and blocks arent breaking like before i have to break twice and my fps was still 30 20 even render distance is 2 chunks but before even i used 64 chunks i got 60 fps what the hell happened
minecraft 1.12.2
forge 14.2.2768
project red 1.4.38

I need more details. Also that is an invalid version of PojectRed. A modlist would also be helpful.

Closing because I don't have enough details to reproduce.