Unwatchable. Artifacts dominate every frame.
At the heart of a 100MB feature film is the HEVC codec, which provides roughly 50% better data compression
A standard 1080p movie ripped from a Blu-ray averages between 1.5GB and 8GB. A 700MB file used to be the "standard" for low-quality scene releases (the infamous 700MB AVI era). To drop to , you are reducing the file size by roughly 85-95% compared to even those low-end rips.
Look at the estimated file size in HandBrake. If it says 185MB, adjust the RF to 36. If it says 80MB, adjust RF to 32.