My boss told me that I work a little faster than the others and I shouldn’t expect others to live up to my standards.
You can slow down and take some break. You can take longer lunch, read a book, etc.Don't burn yourself out.
I then told him (and backed it up with numbers) that when I’m working with 4 coworkers, I’m consistently doing about 80% of the work and some coworkers working from home just log off when I’m working and let me do everything by myself.
Either they let you... Or you take their tasks on your own. You taught them, they can do nothing and still get the rewards because you will do it anyway. So, don't do more than you need. It's hard, but they need to be responsible for their work. Not sure how you share the workload, do you have tasks or whatever. But stick to it. If you have too many tasks, tell your boss. You need to take breaks, even if you feel guilty. It's on the boss that the work is delivered on time and that people are not overwhelmed with tasks. Don't do overtime if there is no real need. The deadlines most of the times can be postponed. If not, you need to have the coworker's help (and real). On meetings you can ask the boss how this work could be shared. Etc.
Not all of those things can be done everywhere and at all times, but you need to be your own advocate to not be burned out. And at worst, maybe a new work would be a better solution in the end. You could start looking around, even if you don't want to change the work now - you will know how valued you are.
My coworkers got told off and written off by my boss, and now they’re mad at me for “snitching”.
I'd probably first try to move back some of their tasks back to them and see it backfire on them.
![Wink ;) ;)](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f609.png)
You can tell them directly, that you don't have time to pick up their tasks. And take your time at work - even go for a walk (I needed therapy to be able to slow down at work - it's been better for me). And if they call you out, you can play dumb. "Was I supposed to do that? You didn't ask for my help." Also - having things written helps your case. If you have written down a summary of meeting with who does what task (and CC boss) then it's harder for them to overwork you.
TL;DR the point is you can do much more than just tell the boss honestly they don't work. You can say "no" to others and take your time at work to not be overwhelmed with work.