Hardware acceleration in Hybrid

[Selur]

Short: No, there is no magic setting that always makes sense to enable and that will always only be beneficial.

Longer:
Hardware acceleration should not introduce artifacts unless something went wrong.
Whether hardware acceleration helps speeding up the filtering (or the encoding by saving cpu resources) depends a lot on the individual setup, the used filters, the source and the overall script and settings.
Sometimes it helps for example to enable hardware decoding, other times it's faster to use software decoding depending on your system.
Sometimes, enabling GPU acceleration of deinterlacing helps, speedwise sometimes it slows stuff down.
Sometimes, enabling GPU acceleration for filtering, slows down the overall filtering speed, but speeds up the encoding since there are more resources free for the encoder.
=> Let me know if you find some setting that always helps.

Cu Selur

Ps.: Encoder chip based encoding (i.e. NVEnc) can be faster than software encoding depending on the encoder chip and the CPU,... but often it is just faster and software encoding could preserve more details at the same target size (assuming the target size is sensible low).