Optimized mode

--optimized

Optimized mode is currently not working 💯

img2img is broken on optimized mode

Entire optimized mode implementation probably needs redoing from latest basujindal

txt2img is working

Some users need to run with --precision full --no-half it is reported commonly by 16xx nvidia graphics card users

Basic hardware survey/discussion to be done to find out which graphics cards people are using, and some data on generation times, vram usage etc with a selection of standardized settings