Every so often the game will render at 23-43 FPS and present itself inside of a letterbox without a change to settings or resolution. Is there any reason for this or is it a current Dev Issue??

This issue has been persistent with an adequate PC with two different CPU's and GPU's - Currently on the lower end specs which were working fine on last boot

RTX 3050 - RTX 4060ti

Ryzen5 3600 - Ryzen7 5700x

64gbs RAM

it can be too many or too detaled prints you have also if you want to make sure it is go to sandbox print them and look at them then look away and if your frames get small boost then its the 3d prints you were printing or may be mods you have idk but prints were always my problem

hope helps you my friend