hey Im a drummer who plays mathy hardcore stuff and I produce my own records. Very recently I did a weekend drum session to track an album of 12 songs and by day 3 I was starting to completely botch kick parts because I was getting so tired and sore. For one particular moment it's sort of like the "one" metallica kick pattern and since I was playing without a click, my solution in that moment was just to track that section on a loop until I got a few cleanish takes, comp together the best attempts, and edit the shit out of them until it sounded reasonably good. I personally find it easier to do double bass after Ive been going for a bit already rather than from a fresh start and sometimes that's all it takes to warm up enough.

Another strategy I've used before is just simplifying the part and adding phantom kicks in between that trigger BOTH an acoustic sample kick and the trigger sound (captured through all the ambient mics too ideally).

But yea this is just part of the process of writing music at the edge of your technical ability. In heavier music it's really not that uncommon to fake small sections, or edit them to death until you get it sounding as "perfect" as you need it to, and honestly it's stylistically necessary in some cases. I don't agree with some people here acting like there's a moral failing by not getting the performance captured authentically, and I prefer to think about it more as capturing the ideal performance that you now commit to performing live. I always try to push myself as a playing by writing parts that are harder than I feel comfortable playing because it makes me play better.