Just because top cubers don't use an alg doesn't mean you shouldn't. For OLL 40: f R' F' R U R U' R' S' works much better for me than the "standard" alg all the top cubers use.
The F' at the end makes it slower for me, but tbh if top cubers decided to use this I think it would be faster than the standard alg.
I timed those two algs. S move alg: consistently sub-0.85 with the fastest execution being 0.76 Left pinky move alg: consistently sub-0.75 with a 0.64 execution.