u/win11wohoshikunai

I am a saxophone and clarinet player who just picked up the oboe. I am really struggling with the resistance and amount of force required to get a sound out of the instrument. My embouchure feels fine, but after a minute of playing, the buildup of pressure causes my throat to hurt and feel like it's about to explode. I've checked my posture, and I try to relax and open my throat as much as possible, but nothing seems to lessen the pain in my neck. How do you guys deal with this?

I play the saxophone and clarinet professionally and am trying to learn the oboe. I'm currently playing on a Yamaha OB-241 and just bought a Jones Artist medium-soft reed. I will start using handmade reeds once I get more experience with the instrument. The reed is quite responsive, however when I crow it (with my mouth on the thread part), I get an A instead of a C, and on the oboe, every note starting with middle E♭ and higher comes out a semitone flat unless I really push it and play extremely loudly.