I have a drop of fps in third person view and in inventory, maybe, because of character on the screen. I tested without other mods, but it still low fps. Minecraft without all mods has normal fps.

This is duplicate of #280, but i have 4gb RAM.

Post a debug crash.

How to get debug crash? I can only give some screenshots. Sorry for my incompetence.

Hold F3 + C for 10 seconds.

debug.log

Looks like an issue with tlaunchers skins.

You either need to turn off tlauncher skin option.
or
Turn off AW texture painting in the config. Setting is in config\armourers_workshop\client.cfg change texturePaintingType to -1.