see i am more than confortable on my board, and when it comes to small features i am just as conforatble. last time i went out i noticed my bindings were not adjusted properly, and after that i gained a little confidence, but i didnt have any big features to try my new tuning all i had was a little kicker, so maybe the reason for my lack of confidence is due to i knew subconiosly that my board wasnt set up corectly.
Ah right, I misread that thinking you weren't comfortable going fast.
In this case it's just confidence and you need to stop psyching yourself out. I doubt it's your gear or anything subconscious like that (if anything that's just a convenient thing to blame).
It's more that you aren't used to bigger features, which is normal. My suggestion is make a checklist of what you need to do to prepare, run through it, then go (eg - where do I drop in, do I need a setup turn, where do I need to be balanced and pop etc etc). The longer you wait beyond what is necessary, the more you'll psyche yourself out.
During the drop in, focus only on what you have to be doing. If it's a jump or a box, focus on your line and your balance and stance. Don't overthink things.
Oh and one more thing... if you psyche yourself out and slow down, don't hit the feature. Never ever hit the feature once you've taken off too much speed or psyched yourself out. It's better to skip a feature than hit it without the right speed.
If you don't already have one, make sure you have a set drop in spot for every park feature. It should be the spot where you know you can drop in, ride straight towards the feature and clear it to the sweet spot. That way your speed is set for each attempt and you aren't second guessing yourself.