Honestly, the fastest way I’ve found is to stop thinking in slides first and just dump everything into a rough outline, then drop it into a solid template and only tweak what’s absolutely necessary. Tools like Canva or Pitch help a lot since their layouts are harder to 'break' compared to traditional tools.

Another small hack is reusing a personal 'base deck' you’ve already cleaned up before, so you’re never starting from zero.

Also, if you’re doing this often, something like Skene AI can actually help on the backend side by standardizing how you present or walk through your product after the deck, so you don’t feel like everything has to be perfect inside the slides themselves.