Question / Help Dropping frames only on certain games?? HELP

[biigboiigaming]

hey guys, so when i stream im dropping a ton of frames for idk what reason. ive toyed with settings to optimize so my stream runs smoothly for all games but league and small games are perfectly fine and smooth no frame loss. but when i stream pubg or apex. i lose so many frames
plus ppl say i sometimes freeze or chop on stream